Aug. 7, 2023
S26E94: Voyager 2's Return // Tectonic Shifts // ISS Resupply: Unraveling Space Mysteries
- **Voyager 2's Intergalactic Journey Continues:** Despite a brief loss of contact, NASA's Voyager 2 spacecraft, currently journeying through the vast expanse of interstellar space, approximately twenty billion kilometers away, has been confirmed to...
- **Voyager 2's Intergalactic Journey Continues:** Despite a brief loss of contact, NASA's Voyager 2 spacecraft, currently journeying through the vast expanse of interstellar space, approximately twenty billion kilometers away, has been confirmed to be fully operational.
- **Revolution in Earth's Plate Tectonics:** A groundbreaking study suggests a recent transformation in Earth's plate tectonics system, which was previously divided into two unique layers.
- **Successful Supply Mission to the ISS:** Northrop Grumman's Cygnus ND-19 cargo ship, loaded with approximately 3800 kilograms of essential supplies, has accomplished a successful docking at the International Space Station.
- **The Science Report:** - **Australia's Rocket System Contribution:** Australia is set to provide the US with cutting-edge guided multiple launch rocket systems, marking a significant advancement in international defense cooperation. - **DNA Sequencing for Australian Newborns:** The potential for DNA sequencing of every newborn in Australia is being explored, a move that could revolutionize healthcare and disease prevention. - **COVID-19 and Genetic Variants:** A gene variant prevalent among individuals who remain asymptomatic despite contracting COVID-19 has been identified, offering new insights into the virus's behavior and potential treatments. - **Alien Craft Sightings Debunked:** Claims of alien spacecraft sightings over Washington have been refuted by skeptics, underscoring the importance of critical thinking in the face of extraordinary claims.
The Astronomy, Space, Technology & Science News Podcast.
WEBVTT
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This is Spacetime Series twenty six,
episode ninety four, for broadcast on the
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seventh of August twenty twenty three.
Coming up on Spacetime, Voyager two loses
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contact with Earth, claims that plate
tectonics on Earth recently underwent a fundamental change
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and a new mission to the International
Space Station. All that and more coming
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up on Spacetime Welcome to Spacetime with
Stewart Gary. NASA mission managers have confirmed
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that the Voyager two spacecraft is alive
and well. Officials at the Jet Propulsion
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Laboratory in Passinga, California lost contact
with the probe almost twenty billion kilometers away,
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well beyond our Solar System and traveling
through interstellar space. It appears of
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forty command sent up two weeks ago, caused an accidental deviation of the spacecraft's
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antenna by two degrees away from a
direct line of sight to Earth, cutting
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communications. The loss of signal cut
all contact with the Voyager two, preventing
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the spacecraft from receiving commands or transmitting
data back to Earth. Mission managers are
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still traded to determine exactly how the
problem originated. Voyager just simply disappeared off
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the screens, but then NASA's camera
Deep Space Communications Network seventy meter dish detected
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the heartbeat signal of the forty six
year old spacecraft, determining it was still
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alive and well and operating nominally.
The camera tracking station then bombarded Voyager twos
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vicinity with the correct command in the
hopes that it would hit the mark,
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triggering the spacecraft to move its antenna
back into the correct position towards the Earth.
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Traveling at the speed of light.
It still took the signal some eighteen
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and a half hours to reach the
probe, but it worked successfully, instracting
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Voyager two to reoint itself and turned
its antenna back to Earth. Voyager two
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then began returning science telemetry data indicating
its operating nominally and that it remains on
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its expected trajectory. Had the attempt
failed, mission managers would have been forced
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to word until October. That's when
an automatic spacecraft reset was planned to take
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place, which would have seen the
probe reorentos antenna towards the Earth automatically.
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Voyager two was launched on a grand
tour of the Outer Solar System back in
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nineteen seventy seven, along with its
identical twin probe Voyager one. It was
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a rare alignment of the outer planets
at the time, which meant this journey
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could be undertaken, taking the probes
first to Jupiter and then allowing the spacecraft
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to use the gas giant's gravity to
slingshot themselves towards the ringboard of Saturn.
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From the Voyager one headed out of
the Solar System in a northerly direction,
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but Voyager two continued on visiting Urinus
and then using the gravity assists of the
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ice chiant to slingshot it to Neptune
before it two moved out of the Solar
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System southerly direction. Vort You two
reach the Drivin System in nineteen seventy nine,
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the Saturnian System in nineteen eighty one, Urinus in nineteen eighty six,
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and Neptune in nineteen eighty nine.
The probe met its historic entry into interstellar
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space on November the fifth, twenty
eighteen, at a distance of one hundred
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nineteen point seven astronomical units or seventeen
point nine billion kilometers from the Sun,
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moving at a velocity of fifteen point
three four one kilometers per second relative to
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the Sun. An astronomical unit is
the average distance between the Sun and the
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Earth, which equates to approximately one
hundred and fifty kilometers. Who vot you
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Two's twin spacecraft, Voyager one,
is still communicating and working fine as it
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travels through interstellar space in a different
direction. Boger one is now some twenty
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four billion kilometers from the Earth,
making it the most distant spacecraft consequently the
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most distant man made object in existence. The CSROS Glen Nagel from NASA's Canberra
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Deep Space Tracking Station says the silence
from Voyager two is a stark reminder of
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the colossal distances that separate the spacecraft
from their home planet. Yeah. So,
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back on the twenty first of July, we relayed up to the Voyager
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two spacecraft a series of planned command
and is not quite sure yet. It
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could have been something in the command
sequence. It could have been when it
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was received and can something on the
spacecraft causing normally. It could have been
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a flip bit from a cosmic ray
strike on the magnetic tape that it uses
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to record its commands and data,
and it could have been any number of
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things. Tell us about Voyager two
and its sistership Voyager one. So Voyager
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one and Voyager two were launched in
world Vorger two August twentieth, nineteen seventy
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seven, and just a few weeks
later, on September fifth, ninety seventy
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seven, Voyager one headed away from
the Earth. And it sounds funny to
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launch the second spacecraft before the first
one, but because a few weeks later
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we're a little bit closer in our
path around the Sun to get to Jupiter,
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Voyager one could actually get to Jupiter
first, and so it arrived there
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and did it study son. A
few months later, in nineteen seventy nine,
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the Voyager two spacecraft came along and
did its encounter, and then Voyager
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one off to Saturn. Voyager two
files close behind. But then Voyager one
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headed northward out of the Solar System
above the ecliptic plane that the planets orbit
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on, and Voyager two was then
able to continue on to go to Urinus
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and then Neptune in nineteen eighty nine, and then it headed southward out of
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the Solar System, so they're both
generally heading in the same direction, just
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north and south of the ecliptic planements
to the planet's orbit on and then now
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I put on what they called the
Millennium mission, and that was to continue
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their journey outward to reach the inner
boundaries of an edge of our solar system,
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the heliosphere and the Hilo's fear.
Think of it being like going through
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water. It's a bow shock wave
in front of it. So as the
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Solar system travels through the galaxy,
the outward rushing energy of our son collides
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with the inward rushing energy of all
the other stars out there, the interstellar
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wind meeting the solar wind. And
so the Voyager spacecraft ended that wave,
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traveled through it, learned a lot
about that outer edge of our solar system
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and its role in surrounding our entire
Solar system, and then got ahead of
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the wave. And that was an
exciting moment for the science team where we
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saw a dramatic change in the signal. Sort of the outward rushing energy of
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the Sun wasn't there anymore, and
we're for the first time looking at the
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clean air of interstellar space. And
that was quite a remarkable moment. Voyager
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two passed that boundary in two and
eighteen, and we were with it on
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that day when that signal came through
and we saw the change, and I
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can tell you it was a very
excited science team at such a propulsion labs
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that saw that. And of course
they followed on from the Pioneer ten and
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eleven spacecraft which sort of tested the
waters, didn't they. Yeah, they
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headed off a number of years earlier. They also visited Jupiter and Satin,
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but with less instrumentation and had lower
quality cameras. And we're talking we're talking
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cameras, not talking digital at that
time. They're talking about television cameras,
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TV tubes, vacuum tubes for to
take those amazing images. And they go
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to those first clips of those two
giant wealth close up, and that really
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paved the path for the voyages to
head off with all their huge suite of
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instruments and their better quality cameras to
take these close up views not only the
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planets and those planets ring structures,
but also the many many moons around those
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worlds, which in some ways have
become far more intriguing than the planets themselves
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because some of the moons, particularly
Jupiter and Satin, have water in their
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environments under their icy surfaces, and
we've learned that those could be environments that
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could support life somewhere else in our
Solar system. So yeah, they've got
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a grand story to tell, both
the Pioneers and the Void. And the
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pioneers were important because they were the
ones that warned us the high radiation levels
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around Jupiter and that allowed the voyages
to be built to handle that. Yeah,
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we always knew that the Jupiter,
with its very strong magnetic field,
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would create this high radiation environment,
and it really wasn't until the Pioneers gone
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out there that we realized just how
intense that radiation is and how the moons
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interact in that environment and literally create
loops of magnetic energy and radiation a doughnut
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around Jupiter, particularly Io, which
spews out sulfur from its volcanoes on its
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surface which were first spotted by Voyager, and that creates a very dynamic environment.
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So yeah, we were able to
pioneer spacecraft to make the voyages more
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hardy, and then of course from
the voider information we could make missions like
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Galileo and Juno a Jupiter and the
Cassina missionment SAT be quite toughest about to
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handle those environments for not just quick
fly buys, but for years orbiting and
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studying those wells space now an interstellar
space. Where are they going? So
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for Voyager two, twenty billion kilometers
away at the present time, traveling at
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about one point four million kilometers a
day, it's headed off to a distance
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star with well just a serial number. It won't reach that star for another
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two hundred and ninety six thousand years. But for Voyager one, heading on
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its fire paths, it will fly
within the light year of the star series
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in just another forty thousand years from
now. We'll lose contact with them long
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before that happens. So if all
goes well, we get contact with Voyager
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two constantly in contact with Voyager one, we should still have at least a
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radio signal coming back from them that
we can detect into the mid twenty thirties.
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But eventually they'll get so far away
and their signals so small, but
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not even our dishes will detect them
anymore. The signal will be lost in
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the background noise generated by the rest
of the universe in radio frequencies, and
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then they'll just keep going. Eventually, those two spacecraft traveling through our galaxy
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will leave our whole system well behind, leave the stars of our able behind.
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They'll be the last reminder actually that
we ever existed. They'll outlast the
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Earth and outlast the Sun, and
the last reminder of humanity's placed in the
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universe, which is why the great
science seems. Back At that time,
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particularly Carl Sagan and John Calliffe created
the Golden Records on board both Voyager spacecraft
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with a record of music and literature
and languages, cultures, and a little
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time capsule a story about humanity.
And it was sort of a hopeful thing,
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promising thing that we're sending a message
in a little tiny spacecraft bottle often
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too, the universe, that vast
ocean of space, in a hopeful port
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that maybe if there is somebody out
there, they'll find it and learn a
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little bit about us. Even if
we're already long gone and the Pioneers are,
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we still able to talk to them
at all. I know they were
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being used for a little while to
test receivers ability to pick up faded signals.
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What's happening there for the Pioneer spacecraft, they have long since gone silent,
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much smaller spacecraft, less powerful transmitters
than the voyages. The last contact
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we had with the Pioneer ten was
back in two thousand and two. So
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that was the last whisper for that
spacecraft. I'm sure it's probably still out
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there. We're certainly still out there, and maybe even still a faint amount
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of power for its radio transmitter,
but we simply cannot detect it anymore.
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So if they also carry on board
plat with a little bit of information about
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who built them, where they came
from, and our understandings of science and
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mathematics, so maybe another little hopeful
message out to anybody that might be there
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in the universe. Are they heading
for interstellar space as well? They will
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eventually in a sour space, but
they don't quite have the speed the Voyager
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spacecraft, which are traveling at about
nearly seventeen kilometers per second, so they
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won't reach escape velocity for the ultimately
for the entire Solar System, so they
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will stay massive soul or for many
buildings of years to come. Okay,
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and I guess the only other one
then we'll be new horizons. Yeah,
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for the New Horizon spacecraft which visited
Pluto back in twenty fifteen, and then
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the hyper vault jac Aracost in twenty
nineteen. It has certainly the kvelocity of
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the Solars so one day we'll reach
the inner Edge and travel through the Hilio
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Sheath boundary the magnetisphere in our Solar
System and ultimately enter interstellar space. But
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whether that mission is still operable by
that time, and it's taken the Voyager
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spacecraft, you know, more than
forty years, in forty six years now
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to reach into stellar space, we've
still got a long way to go for
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the new Horizon spacecraft, which is
only launched in two thousand and six,
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so it's still got a long way
to go to reach that malster. You
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guys are constantly preparing for new missions. What's on your horizon? So coming
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up actually later in August, we've
got the landing of the Indian Space Agencies
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changed around three spacecraft making their latest
attempt to land on the surface of the
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Moon, and we'll be directly involved
in the landing as we have been right
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throughout the mission since launched. In
September, we've got the return of NASA's
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Osiris REX mission, returning samples from
the asteroid Benu, which will be very
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exciting to add to our knowledge of
those little space wanderers out there, and
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Benu's of particular interest to scientists and
understand more about its composition, because Benu
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has an orbit which actually crosses the
Earth's orbit from time to time, so
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knowing more about it's and its structure
and composition, all of us understand a
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bit more than what we might need
to do if that object one day might
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actually come our way. And then
October a big mission for the year,
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and that's the launch of the Psyche
mission from NASA, heading off to the
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asteroid known as Psyche, which the
science team believes it's the remains of the
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core of a planet that was once
forming in our soul system a long time
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ago, but effectively an object that
ran out of material to grow to become
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a larger world, and then successive
bombardments of that surface with smaller objects have
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blasted away a sort of outer surface
and left behind just the metal iron core.
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So this is going to be a
really unique mission. We can't get
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to the core of a planet,
we can't drill thousands of kilometers into the
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Earth, so getting to have a
sort of his one we made it earlier
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out there in the space. The
asteroid Psyche gives us a chance to go
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and have a look at these objects
and understand more about the formation of planet.
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That's the CSIROS Glen Nagle from NASA's
caberra At Deep space tracking station and
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this space Time still to come claims
Earth's plate tectonics have recently undergone a fundamental
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change and a new mission to the
International Space Station. Oh that and more
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still to come on space time.
A new study claims that planet Earth's system
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of plate tectonics was until recently stratified
into two distinct layers. The revolutionary new
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findings were reported in the journal Nature. Suggests the planet originally had separate upper
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and lower mantle regions that were isolated
from each other. The Earth is truly
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unique among our Solar Systems planets.
It has vast oceans and abundant life.
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But Earth's also unique because it's the
only planet with plate tectonics, and that
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not only shaped its geology, its
climate, and atmosphere, but possibly it
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also influenced the evolution of life.
Plate tectonics describes the movement, interaction,
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and subduction of tectonic plates on the
Earth's surface. That movement is driven by
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the very slow creeping motion of the
Earth's mattle called convection, which carries heat
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from the interior of the planet to
its surface. Researchers believe that convection in
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the mantle, started shortly after the
Earth's formation four point five billion years ago,
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occurs at the scale of the entire
mantle, so when plates collide on
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the Earth's surface, one gives way
and sinks into the hot mantle, ending
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up in a sort of plate graveyard
on the top of Earth's metallic core.
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However, a new study suggest that
this style of plate tectonics may actually be
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a more recent feature in earths geologic
history than previously thought. One of the
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studies authors, Martin Schillett, from
the University of Copenhagen, says the new
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research suggests that foremost of Earth's history, convection in the mantle was stratified into
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two distinct layers, namely upper and
lower mantle regions, that were virtually isolated
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from each other. This transition between
the upper and lower mantle occurs at about
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six hundred and sixty kilometers below the
Earth's surface. Now, at this depth,
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certain minerals undergo phase transition, and
Schiller and colleagues believe that this phase
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transition may well be the reason and
why the upper and lower mantle origins remain
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mostly isolated. The findings indicate that
in the past, recycling and mixing of
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the subductive plates into the mattle was
restricted to just the upper matal where there
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is strong convection, and this is
very different from how the authors believe plate
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technonics operates today, where subducting plates
can sink all the way down in the
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lower matle, just above the core
metal boundary. Chiller and colleagues reach their
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conclusions after developing a new method to
produce ultra high precision measurements of the isotopic
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composition of the element titanium in various
rocks. Isotobes are versions of the same
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element that have slightly different masses,
and the isotopic composition of titanium is modified
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when crust is formed on the Earth, and this mixed titanium isotobes useful to
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trace how surface material like the crust
is recycled into themantle through geologic time.
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Using this new technique, the authors
were able to determine the composition of mantle
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rocks that formed the earliest three point
eight billion years ago all the way through
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to modern day lavas. If the
recycling and mixing of tectonic plates was restricted
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to just the upper mantle. As
postulated in this new study, it means
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that the lower mantle could contain undisturbed
primordial material. The concept of a primordial
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mantle refers to a reservoir of mantle
material that's remained relatively unchanged and therefore preserved
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since the very early days of Earth's
formation four point five billion years ago.
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That's when the even earlier proto Earth, which formed four point six billion years
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ago, was hit by a Mars
sized planet called Thea, which turned the
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whole thing back into a magma ocean, resetting the clock for differentiation and eventually
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separation of the planet. It's a
separate outer and inner cause, mantle and
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crust. Now, the very idea
of a primordial reservoir existing deep in the
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Earth isn't new. It's been suggested
previously based on the isotopic composition of rare
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gases trapped in lavas from modern day
deep seated volcanoes. However, the interpretation
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of this state has always been ambiguous, and some have suggested the isotopic signal
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comes all the way from the Earth's
core as opposed to the deep mantle.
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But because we know titanium isn't present
in the Earth's core. It therefore provides
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a fresh perspective on this long standing
debate. It's an interesting result this space
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time still to come a new mission
to the International Space Station, and later
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in the science report, Australia to
supply the United States military with a new
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generation of guided missile. All that
and more store to come on spacetime.
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The Northrop grumm Signus ND nineteen cargo
ship carrying some three thousand kilograms of supplies
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00:20:04.599 --> 00:20:10.880
as successfully docked to the International Space
Station. The mission, which launched from
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00:20:10.920 --> 00:20:15.839
NASA's Wallops Island flight facility on the
Virginian mid Atlantic Coast, was Northrop Grumman's
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nineteenth cargo flight to the Space station
and it's eighth under its second commercial resupply
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services contract with NASA four three two
one DOT and Terry's Invent ninety falls Tip
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00:20:34.440 --> 00:20:42.039
Authority ferries taking north of Grumman's commercial
resupply mission nineteen into urban to the International
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00:20:42.079 --> 00:20:49.559
Space Station remains. Flight controllers reporting
a nominal ascent for in Terry's at a
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00:20:49.680 --> 00:20:57.359
prenominal humber pressure stations no remain as
rust steady is on TVC is on at
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00:20:57.400 --> 00:21:03.359
are nominal GLAD to be the main
phenomenal hundred powers nominal a vehicle passing improved
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00:21:03.359 --> 00:21:10.839
magical good without passing through MAXCU.
MAXCU is the maximum dynamic pressure experienced on
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00:21:11.039 --> 00:21:15.839
terries. Corp pressure reization valves are
nominal. Engines are main nominal stay LCA,
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your co cut speed in Terris,
Thank you LA. Half through the
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00:21:19.079 --> 00:21:23.599
burn one hundred seconds to MIKO passing
through thirty thousand feet attitude nominal attitude rains
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00:21:23.640 --> 00:21:29.119
nominal engine remains nominal SAT eight hundred
percent passing through five thousand feet per second.
258
00:21:29.400 --> 00:21:33.400
Corp pressurization remains nominal. Electrical powers
nominal TVC remains nominal. Engines remain
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00:21:33.480 --> 00:21:37.640
nominal for proximity. Forty seconds from
MICA flow throttled down has begun. Attitude
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00:21:37.680 --> 00:21:41.799
nominal TBC pre set down SLEW has
started. Three minutes into the flight of
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00:21:42.079 --> 00:21:47.920
terries. We had about fifteen seconds
until main engine cutoff down STADA fifty five
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00:21:47.920 --> 00:21:51.559
percent thrust and we have main engine
cutoff. Elvis is taking care of business.
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00:21:51.759 --> 00:21:56.160
We have stage separation confirmed Stage separation
as we lose terries into the clouds
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on this hazy evenings. Stage two
agmission time expected at mission time tooty.
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Stage two ignition expected and approximate ten
seconds varying is separated and Terry's currently in
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00:22:08.680 --> 00:22:14.839
a coast phase. Stage two ignition
and TVC batteries nominal. Second stage solid
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00:22:14.920 --> 00:22:18.000
rocket motor has ignited. Remains normal. The stage will burn for two minutes
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and forty four seconds. The castor
thirty XL will burn from approximate two point
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00:22:22.559 --> 00:22:26.720
five minutes. Power remains nominal.
Stage two TVC is nominal. Fly controllers
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report reporting good performance on the second
stage. Power remains nominal. TVC remains
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00:22:32.400 --> 00:22:36.720
nominal in stage two and power approximate
one hundred seconds from stage two burnout at
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00:22:36.720 --> 00:22:41.240
a troop phil nominal power remains nominal. Stage two TVC remains nominal. Fifty
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00:22:41.279 --> 00:22:45.559
seconds to stage two burno TBC elect
for power remain nominal. Beginning to see
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00:22:45.599 --> 00:22:51.319
tailoff and motor pressure and we have
stage two burnout six minutes fifty five seconds
275
00:22:51.319 --> 00:22:56.440
into the flight. The second stage
solid rocket motor has burned out. As
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enabled. They will enabled now entering
about approximately a two minute coast phase is
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00:23:02.400 --> 00:23:06.119
an orbit and will coast for roughly
one hundred seconds prior to biload separation seven
278
00:23:06.119 --> 00:23:11.279
minutes forty five seconds into the flight
of Entries. After spacecraft separation, it
279
00:23:11.319 --> 00:23:15.759
will take approximately two hours thirty minutes
until the solar arrays are unfurled to start
280
00:23:15.759 --> 00:23:23.039
collecting power for the Signus vehicle.
Spacecraft separation is coming up on thirty seconds
281
00:23:23.039 --> 00:23:26.799
continuous to coast prior to biload seperation, and we have baiload separation and the
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00:23:26.799 --> 00:23:33.160
flight control teams confirmed Signus has separated
from the Entries second second stage, flying
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00:23:33.200 --> 00:23:36.799
free and beginning its journey to the
International Space Station. All right, launch
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00:23:36.799 --> 00:23:41.039
team, I'll see on countdown that
we're going to go ahead and proceed with
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00:23:41.119 --> 00:23:45.920
our post launch checklist. We've confirmed
that we've had SIGNS separation. Congratulations to
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00:23:45.960 --> 00:23:51.559
the SIGNA team. This mission also
marked the final flight for the Entire's two
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thirty rocket, originally developed by Obital
Science as the Tourists too. A new
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version of the rocket, to be
known as the Entirees three third using a
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00:24:00.799 --> 00:24:06.200
Firefly Aerospace first stage, was expected
to launch next year, but the LEAs
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in development have now pushed that launch
date back to the twenty three mission in
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00:24:10.440 --> 00:24:15.119
twenty twenty five, so to fill
the gap, at least three Signals missions
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will be launched aboard SpaceX Falcon nine
rockets instead. That means that, as
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well as launching its own Dragon cargo
ships to the International Space Station, the
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Dragon crew capsules transporting astronauts, SpaceX
will also be firing at least three missions
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for its competitor Northrop Grumman. As
to what happens with the other two teams
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contracted to fly to the International Space
Station, namely Boeing Starline A transporting crews
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aboard an Atlas now Vulcan rocket and
Sierra Nevada's Cream Chaser reusable lifting body space
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plane, well there both will behind
schedule, although birth are still expected to
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fly sometime. We'll have updates on
both those projects next week. The supply
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is being brought to the space station
aboard the NG nineteen signals will support dozens
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of research experiments now being undertaken by
the Expedition sixty nine crew. These include
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new gene therapy tests designed to demonstrate
the formation of three dimensional neuron cell cultures
303
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in microgravity and to test a neuron
specific gene therapy. Also aboard is the
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sixth spacecraft fire experiment that's the last
in a series to test flammability of different
305
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oxygen levels and to demonstrate fire detection
and monitoring, as well as post fire
306
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cleanup capabilities. That's an experiment that
will take place aboard the Sigma's cargo ship
307
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after that spacecraft is departed from the
International Space Station. Another experimental measure atmospheric
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density using a multi needle aMule probe
to monitor plasma densities in the ionosphere that's
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where the Earth's atmosphere meat space.
The flights also delivered a new improved water
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sterilization and sanitation unit. It'll reduce
microbial growth in stored water supplies and can
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also provide heartwater for crew consumption and
for food pre operation. And there's also
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an old friend return of the space
station, a little cube shaped robotic helper
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called astrob. It's been sent back
into orbit after some modifications in order to
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help out with routine tasks. Signals
has also delivered a condensation module and heat
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00:26:17.359 --> 00:26:22.440
transfer system for a flow boiling condensation
experiment that will help scientists better understand heat
316
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distribution and fluid space. And there's
also an upgrade Banessa's colde Atom Lab quantum
317
00:26:29.440 --> 00:26:33.920
physics facility, which makes use of
the microagravity environment of the space station to
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study quantum phenomena in ways which simply
at possible on Earth. The upgrade will
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give scientists more data in a wider
variety of experimental conditions. Once it's all
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unloaded, the Signal spacecraft will be
loaded with space station refuse and in October
321
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it'll depart the space station loaded with
several thousand kilograms of trash and will then
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burn up in the atmosphere this space
time and time. How to take a
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brief look at some of the other
stories making news and science this week with
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a science report. Australia has entered
into a new deal with the United States
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just apply the US military with a
new generation of guided missiles and multiple rocket
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launch systems. Under the agreement,
Australia will need to begin manufacturing the missiles
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within two years. The Australian government
recently set a side two point seven billion
328
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dollars to acquire a long range strike
capability, which would bolster Australian stockpiles and
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could also be exported to the United
States and other friendly nations. The announcement
330
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comes as Western nations continue to deplete
their own munitions and logistics reserves in the
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ongoing conflict again Russian invasion of Ukraine
that war is exposing weaknesses in many Western
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00:28:04.640 --> 00:28:10.680
military supply chains, which are now
starting to run low on ammunition and missiles.
333
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The missile announcement was made during a
two day Australian US meeting held in
334
00:28:15.920 --> 00:28:22.039
the shadows of the vast Talisman Saber
Joint military exercise in Northern Australia. Talisman
335
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Sabers see the deployment of over thirty
thousand military personnel from Australia, the United
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00:28:26.720 --> 00:28:32.079
States, the United Kingdom, Canada, Germany, France, Japan, South
337
00:28:32.240 --> 00:28:37.680
Korea and several Pacific island nations.
It comes as Australia is forced to embark
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00:28:37.720 --> 00:28:41.359
on its own armed forces overhaul and
build up, moving towards long range strike
339
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capabilities in an effort to keep China
at arms length. Beijing's undertaken a massive
340
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expansion of its military, both in
terms of conventional firepower and in nuclear weapons.
341
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China now operates the world's largest military
and aggressively targets any nation entering the
342
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South China Sea, which it now
claims to have taken possession of country to
343
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international law. As part of the
new deal between Camera and Washington, Australia's
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agreed to an American request to expand
to military bases in the strategically important north
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end of the country, thereby allowing
them to host more training exercises and increased
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rotations of American troops and warships.
Both nations will also continue working towards using
347
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Australia as a safe forward base for
the storage, maintenance, repair, an
348
00:29:30.680 --> 00:29:37.839
overhaul of critical US source munitions and
weapons systems. The meeting also discussed progress
349
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on the Orcus Security treaty between Australia, the United States and the United Kingdom
350
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that'll see Australia built its own nuclear
submarines and purchase at least three US never
351
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Virginia class subs Congress permitting. As
part of the deal, Australia will share
352
00:29:52.440 --> 00:29:59.759
its hypersonic rocket and missile technology with
the United States. A world first for
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00:30:00.160 --> 00:30:04.920
ability study conducted in Australia through a
joint public private sector collaboration has realized the
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potential of DNA sequencing to expand and
improve population newborn screening. The findings are
355
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reported in the journal Critical Chemistry.
Examine the feasibility of targeted gene sequencing by
356
00:30:18.359 --> 00:30:22.920
screening all newborns at or shortly after
birth for multiple genetic conditions in a single
357
00:30:23.039 --> 00:30:30.000
test. The technology is based on
next generation GENA sequencing tools, allowing hundreds
358
00:30:30.039 --> 00:30:37.319
of genes to be simultaneously analyzed for
variations that cause genetic diseases. Scientists have
359
00:30:37.440 --> 00:30:41.519
identified a gene variant common in people
who experience no symptoms when they get COVID
360
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nineteen. The findings are reported in
the journal Nature. Looked at one hundred
361
00:30:45.960 --> 00:30:51.559
and thirty six people who reported no
COVID symptoms, finding one in five carried
362
00:30:51.599 --> 00:30:56.799
a gene variant named hla b star
fifteen zero one, which is involved in
363
00:30:56.880 --> 00:31:00.880
immune responses. In a separate arm
of the study, Situs found T cells
364
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that reacted to some fragments of COVID
nineteen in people with the gene variant who
365
00:31:06.440 --> 00:31:11.079
had never had COVID nineteen, suggesting
they may have developed some form of immunity
366
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to COVID nineteen through previous exposure to
other infections. Almost seven million people have
367
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now been killed by the COVID nineteen
coronavirus since it was first detected near China's
368
00:31:22.000 --> 00:31:29.640
Wuhan Institute of Virology around September twenty
nineteen. The World Health Organization estimates the
369
00:31:29.720 --> 00:31:33.720
true death toiles likely to be around
eighteen million, with some seven hundred and
370
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seventy million confirmed cases globally, that's
ten percent of the world's population. Well,
371
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with all the talk of unexplained anomalous
phenomena across the United States at the
372
00:31:45.160 --> 00:31:49.759
moment, a Washington State resident can
almost be forgiven for thinking she saw what
373
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must have been a U foe one
morning. Instead, however, she's discovered
374
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a new level of embarrassment in public
humiliation after posting a video online of what
375
00:32:00.000 --> 00:32:07.319
she claimed was an alien spacecraft.
The rather bulbous rocket shaped unidentified flying object
376
00:32:07.559 --> 00:32:12.799
was spotted hovering silently above the tree
line in the golden morning sunlight. The
377
00:32:12.880 --> 00:32:17.119
woman filming the incident described the object
as enormous, very fat, and appearing
378
00:32:17.160 --> 00:32:22.200
to have fins coming out of the
bottom. Possibly it's an alien mothership,
379
00:32:22.839 --> 00:32:25.960
timentum from a Straian skeptic says,
In reality, it was a hot air
380
00:32:27.039 --> 00:32:30.799
balloon shaped like a comical fat rocket. It's been operated for the past sixteen
381
00:32:30.920 --> 00:32:37.680
years by a local hot air balloon
company. Well, actually usists. They
382
00:32:37.680 --> 00:32:42.519
actually started Bend Washington, didn't they. Of course, yes, the Arnold
383
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flying source of things. They started
up in brand Washington near Mount Rainier.
384
00:32:45.599 --> 00:32:50.440
Again, this is sort of silly
stories you get all the time people who
385
00:32:50.559 --> 00:32:52.559
film something, and people can film
everything all the time these days, so
386
00:32:52.640 --> 00:32:57.799
they're carrying the camera in their pocket
and they'll film something and they'll instantly put
387
00:32:57.839 --> 00:33:00.920
it up on Facebook or wherever there
for them and say, look, this
388
00:33:00.079 --> 00:33:04.519
is mysterious. It cannot be explained. And some of them can't be explained
389
00:33:04.519 --> 00:33:07.119
because you just don't have any detail, and therefore you have to leave it
390
00:33:07.160 --> 00:33:09.160
as unexplained. It's a lot of
people don't understand what that means. In
391
00:33:09.279 --> 00:33:14.119
newfos, it's unidentified for a reason
you can't explain. It doesn't mean it's
392
00:33:14.119 --> 00:33:16.440
the flying ser but anyway, that's
a different issue. But people keep putting
393
00:33:16.480 --> 00:33:20.519
up these videos of things they've seen, and of course instantly everyone goes,
394
00:33:20.559 --> 00:33:23.079
oh, well, the flying scer. Someone saw this shape that looked to
395
00:33:23.160 --> 00:33:28.759
be a huge round dish elongated shape
floating in the sky and they seem to
396
00:33:28.799 --> 00:33:30.799
have fins off it, and someone
said that looks like an alien rocket,
397
00:33:30.880 --> 00:33:35.079
and someone pointed out, it's not
an alien rocket. It's a balloon that
398
00:33:35.240 --> 00:33:37.559
looks like a rocket with fin Someone
designed it that way and they's you've seen
399
00:33:37.640 --> 00:33:40.599
these hot air balloons and things like
that. They often designed to look at
400
00:33:40.599 --> 00:33:44.960
the most amazing shapes, and this
one someone had designed it to look like
401
00:33:45.160 --> 00:33:47.880
a rocketship vertical, the fins coming
out the side, and someone had filmed
402
00:33:47.880 --> 00:33:51.480
that. And because they instantly assume, I don't know what it is there
403
00:33:51.480 --> 00:33:52.920
for it must be a flying sorcer
for an alien of some sort, they
404
00:33:52.960 --> 00:33:57.160
put it up and everyone believes it. And these things take about oh ten
405
00:33:57.240 --> 00:34:00.400
seconds to debunk. And if a
person who had put it up thought about
406
00:34:00.400 --> 00:34:01.920
it for ten seconds, they might
have hesitated. But if you're the sort
407
00:34:01.960 --> 00:34:06.880
of person who believes in UFOs,
and this was described as a mothership UFOs.
408
00:34:07.319 --> 00:34:09.280
Mothership's a good term to use because
it's big rather than a little thing
409
00:34:09.320 --> 00:34:14.760
whizzing ran and it was very strange, very silly, very jumped to conclusions,
410
00:34:14.960 --> 00:34:16.559
and a lot of pilpa who would
believe it because it's just strange that
411
00:34:16.639 --> 00:34:27.159
therefore they instantly say strange alien rather
than strange funny looking balloon. That's timendum
412
00:34:27.440 --> 00:34:30.639
from Australian skeptics. And you can
see a picture of the hot air balloon.
413
00:34:30.719 --> 00:34:35.719
Come you have a mothership on our
website. Just go to the Spacetime
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00:34:35.840 --> 00:34:55.320
Tumbler blog and that's the show for
now. Spacetime is available every Monday,
415
00:34:55.400 --> 00:35:00.760
Wednesday and Friday through Apple podcast,
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00:35:00.800 --> 00:35:07.159
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00:35:07.320 --> 00:35:13.079
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Just go to Spacetime with Stewart Gary
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425
00:35:45.280 --> 00:35:49.559
you want more Spacetime, please check
out our blog or you'll find all the
426
00:35:49.639 --> 00:35:52.599
stuff we couldn't fit in the show, as well as heaps of images,
427
00:35:52.920 --> 00:35:57.440
news stories, loads of videos and
things on the whereby find interesting or amusing.
428
00:35:57.880 --> 00:36:01.679
Just go to Spacetime with Stewart Gary
Tumbler dot com. That's all one
429
00:36:01.840 --> 00:36:06.920
word and that's Tumbler without the E. You can also follow us through at
430
00:36:06.960 --> 00:36:10.639
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with Stuart Garry, on Instagram, through
431
00:36:10.719 --> 00:36:15.159
our Spacetime YouTube channel, and on
Facebook. Just go to Facebook dot com,
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00:36:15.400 --> 00:36:21.360
forward slash Spacetime with Stewart Gary and
Spacetime is brought to you in collaboration
433
00:36:21.480 --> 00:36:25.960
with Australian Sky Telescope magazine. Your
Window on the Universe. You've been listening
434
00:36:27.039 --> 00:36:32.039
to Spacetime with Stuart Gary. This
has been another quality podcast production from bites dot com
1
00:00:00.640 --> 00:00:05.240
This is Spacetime Series twenty six,
episode ninety four, for broadcast on the
2
00:00:05.320 --> 00:00:11.439
seventh of August twenty twenty three.
Coming up on Spacetime, Voyager two loses
3
00:00:11.560 --> 00:00:18.760
contact with Earth, claims that plate
tectonics on Earth recently underwent a fundamental change
4
00:00:19.320 --> 00:00:24.359
and a new mission to the International
Space Station. All that and more coming
5
00:00:24.440 --> 00:00:49.159
up on Spacetime Welcome to Spacetime with
Stewart Gary. NASA mission managers have confirmed
6
00:00:49.200 --> 00:00:54.640
that the Voyager two spacecraft is alive
and well. Officials at the Jet Propulsion
7
00:00:54.719 --> 00:01:00.920
Laboratory in Passinga, California lost contact
with the probe almost twenty billion kilometers away,
8
00:01:00.079 --> 00:01:06.319
well beyond our Solar System and traveling
through interstellar space. It appears of
9
00:01:06.400 --> 00:01:11.680
forty command sent up two weeks ago, caused an accidental deviation of the spacecraft's
10
00:01:11.680 --> 00:01:15.319
antenna by two degrees away from a
direct line of sight to Earth, cutting
11
00:01:15.319 --> 00:01:21.319
communications. The loss of signal cut
all contact with the Voyager two, preventing
12
00:01:21.319 --> 00:01:26.239
the spacecraft from receiving commands or transmitting
data back to Earth. Mission managers are
13
00:01:26.239 --> 00:01:33.319
still traded to determine exactly how the
problem originated. Voyager just simply disappeared off
14
00:01:33.359 --> 00:01:38.840
the screens, but then NASA's camera
Deep Space Communications Network seventy meter dish detected
15
00:01:38.840 --> 00:01:42.920
the heartbeat signal of the forty six
year old spacecraft, determining it was still
16
00:01:42.959 --> 00:01:49.200
alive and well and operating nominally.
The camera tracking station then bombarded Voyager twos
17
00:01:49.280 --> 00:01:53.680
vicinity with the correct command in the
hopes that it would hit the mark,
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00:01:53.879 --> 00:01:57.799
triggering the spacecraft to move its antenna
back into the correct position towards the Earth.
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00:01:59.480 --> 00:02:01.920
Traveling at the speed of light.
It still took the signal some eighteen
20
00:02:01.959 --> 00:02:07.879
and a half hours to reach the
probe, but it worked successfully, instracting
21
00:02:07.000 --> 00:02:13.280
Voyager two to reoint itself and turned
its antenna back to Earth. Voyager two
22
00:02:13.319 --> 00:02:19.199
then began returning science telemetry data indicating
its operating nominally and that it remains on
23
00:02:19.280 --> 00:02:23.280
its expected trajectory. Had the attempt
failed, mission managers would have been forced
24
00:02:23.280 --> 00:02:29.360
to word until October. That's when
an automatic spacecraft reset was planned to take
25
00:02:29.400 --> 00:02:32.879
place, which would have seen the
probe reorentos antenna towards the Earth automatically.
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Voyager two was launched on a grand
tour of the Outer Solar System back in
27
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nineteen seventy seven, along with its
identical twin probe Voyager one. It was
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a rare alignment of the outer planets
at the time, which meant this journey
29
00:02:47.639 --> 00:02:53.039
could be undertaken, taking the probes
first to Jupiter and then allowing the spacecraft
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00:02:53.080 --> 00:02:58.879
to use the gas giant's gravity to
slingshot themselves towards the ringboard of Saturn.
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From the Voyager one headed out of
the Solar System in a northerly direction,
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but Voyager two continued on visiting Urinus
and then using the gravity assists of the
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ice chiant to slingshot it to Neptune
before it two moved out of the Solar
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System southerly direction. Vort You two
reach the Drivin System in nineteen seventy nine,
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the Saturnian System in nineteen eighty one, Urinus in nineteen eighty six,
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and Neptune in nineteen eighty nine.
The probe met its historic entry into interstellar
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space on November the fifth, twenty
eighteen, at a distance of one hundred
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nineteen point seven astronomical units or seventeen
point nine billion kilometers from the Sun,
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moving at a velocity of fifteen point
three four one kilometers per second relative to
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the Sun. An astronomical unit is
the average distance between the Sun and the
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Earth, which equates to approximately one
hundred and fifty kilometers. Who vot you
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Two's twin spacecraft, Voyager one,
is still communicating and working fine as it
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travels through interstellar space in a different
direction. Boger one is now some twenty
44
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four billion kilometers from the Earth,
making it the most distant spacecraft consequently the
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most distant man made object in existence. The CSROS Glen Nagel from NASA's Canberra
46
00:04:17.199 --> 00:04:23.399
Deep Space Tracking Station says the silence
from Voyager two is a stark reminder of
47
00:04:23.399 --> 00:04:28.680
the colossal distances that separate the spacecraft
from their home planet. Yeah. So,
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00:04:28.759 --> 00:04:30.480
back on the twenty first of July, we relayed up to the Voyager
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two spacecraft a series of planned command
and is not quite sure yet. It
50
00:04:35.680 --> 00:04:39.600
could have been something in the command
sequence. It could have been when it
51
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was received and can something on the
spacecraft causing normally. It could have been
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a flip bit from a cosmic ray
strike on the magnetic tape that it uses
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00:04:47.399 --> 00:04:51.000
to record its commands and data,
and it could have been any number of
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things. Tell us about Voyager two
and its sistership Voyager one. So Voyager
55
00:04:56.240 --> 00:05:00.560
one and Voyager two were launched in
world Vorger two August twentieth, nineteen seventy
56
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seven, and just a few weeks
later, on September fifth, ninety seventy
57
00:05:03.680 --> 00:05:06.639
seven, Voyager one headed away from
the Earth. And it sounds funny to
58
00:05:06.720 --> 00:05:12.000
launch the second spacecraft before the first
one, but because a few weeks later
59
00:05:12.120 --> 00:05:15.920
we're a little bit closer in our
path around the Sun to get to Jupiter,
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00:05:15.040 --> 00:05:18.639
Voyager one could actually get to Jupiter
first, and so it arrived there
61
00:05:18.839 --> 00:05:24.040
and did it study son. A
few months later, in nineteen seventy nine,
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00:05:24.120 --> 00:05:27.399
the Voyager two spacecraft came along and
did its encounter, and then Voyager
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00:05:27.480 --> 00:05:31.839
one off to Saturn. Voyager two
files close behind. But then Voyager one
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00:05:31.879 --> 00:05:36.319
headed northward out of the Solar System
above the ecliptic plane that the planets orbit
65
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on, and Voyager two was then
able to continue on to go to Urinus
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and then Neptune in nineteen eighty nine, and then it headed southward out of
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the Solar System, so they're both
generally heading in the same direction, just
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00:05:48.160 --> 00:05:53.160
north and south of the ecliptic planements
to the planet's orbit on and then now
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I put on what they called the
Millennium mission, and that was to continue
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00:05:56.480 --> 00:06:00.879
their journey outward to reach the inner
boundaries of an edge of our solar system,
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the heliosphere and the Hilo's fear.
Think of it being like going through
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00:06:05.920 --> 00:06:10.519
water. It's a bow shock wave
in front of it. So as the
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Solar system travels through the galaxy,
the outward rushing energy of our son collides
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with the inward rushing energy of all
the other stars out there, the interstellar
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wind meeting the solar wind. And
so the Voyager spacecraft ended that wave,
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00:06:23.959 --> 00:06:27.600
traveled through it, learned a lot
about that outer edge of our solar system
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and its role in surrounding our entire
Solar system, and then got ahead of
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the wave. And that was an
exciting moment for the science team where we
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00:06:35.480 --> 00:06:40.759
saw a dramatic change in the signal. Sort of the outward rushing energy of
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00:06:40.759 --> 00:06:43.879
the Sun wasn't there anymore, and
we're for the first time looking at the
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clean air of interstellar space. And
that was quite a remarkable moment. Voyager
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two passed that boundary in two and
eighteen, and we were with it on
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that day when that signal came through
and we saw the change, and I
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00:06:57.439 --> 00:07:00.120
can tell you it was a very
excited science team at such a propulsion labs
85
00:07:00.160 --> 00:07:03.839
that saw that. And of course
they followed on from the Pioneer ten and
86
00:07:03.920 --> 00:07:08.519
eleven spacecraft which sort of tested the
waters, didn't they. Yeah, they
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00:07:08.560 --> 00:07:12.480
headed off a number of years earlier. They also visited Jupiter and Satin,
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00:07:12.600 --> 00:07:16.000
but with less instrumentation and had lower
quality cameras. And we're talking we're talking
89
00:07:16.040 --> 00:07:19.759
cameras, not talking digital at that
time. They're talking about television cameras,
90
00:07:19.800 --> 00:07:25.040
TV tubes, vacuum tubes for to
take those amazing images. And they go
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to those first clips of those two
giant wealth close up, and that really
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00:07:28.600 --> 00:07:30.879
paved the path for the voyages to
head off with all their huge suite of
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instruments and their better quality cameras to
take these close up views not only the
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planets and those planets ring structures,
but also the many many moons around those
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00:07:40.439 --> 00:07:44.759
worlds, which in some ways have
become far more intriguing than the planets themselves
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because some of the moons, particularly
Jupiter and Satin, have water in their
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environments under their icy surfaces, and
we've learned that those could be environments that
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could support life somewhere else in our
Solar system. So yeah, they've got
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00:07:57.279 --> 00:08:00.439
a grand story to tell, both
the Pioneers and the Void. And the
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00:08:00.519 --> 00:08:05.199
pioneers were important because they were the
ones that warned us the high radiation levels
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00:08:05.240 --> 00:08:07.839
around Jupiter and that allowed the voyages
to be built to handle that. Yeah,
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00:08:07.839 --> 00:08:11.519
we always knew that the Jupiter,
with its very strong magnetic field,
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would create this high radiation environment,
and it really wasn't until the Pioneers gone
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00:08:16.920 --> 00:08:22.319
out there that we realized just how
intense that radiation is and how the moons
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00:08:22.519 --> 00:08:28.160
interact in that environment and literally create
loops of magnetic energy and radiation a doughnut
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00:08:28.360 --> 00:08:33.639
around Jupiter, particularly Io, which
spews out sulfur from its volcanoes on its
107
00:08:33.639 --> 00:08:39.120
surface which were first spotted by Voyager, and that creates a very dynamic environment.
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So yeah, we were able to
pioneer spacecraft to make the voyages more
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hardy, and then of course from
the voider information we could make missions like
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00:08:46.320 --> 00:08:52.879
Galileo and Juno a Jupiter and the
Cassina missionment SAT be quite toughest about to
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00:08:52.879 --> 00:08:56.639
handle those environments for not just quick
fly buys, but for years orbiting and
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00:08:58.039 --> 00:09:01.320
studying those wells space now an interstellar
space. Where are they going? So
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00:09:01.399 --> 00:09:05.399
for Voyager two, twenty billion kilometers
away at the present time, traveling at
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00:09:05.399 --> 00:09:09.799
about one point four million kilometers a
day, it's headed off to a distance
115
00:09:09.840 --> 00:09:15.240
star with well just a serial number. It won't reach that star for another
116
00:09:15.279 --> 00:09:18.960
two hundred and ninety six thousand years. But for Voyager one, heading on
117
00:09:18.000 --> 00:09:22.480
its fire paths, it will fly
within the light year of the star series
118
00:09:22.600 --> 00:09:26.679
in just another forty thousand years from
now. We'll lose contact with them long
119
00:09:26.720 --> 00:09:30.279
before that happens. So if all
goes well, we get contact with Voyager
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00:09:30.360 --> 00:09:33.879
two constantly in contact with Voyager one, we should still have at least a
121
00:09:35.000 --> 00:09:37.639
radio signal coming back from them that
we can detect into the mid twenty thirties.
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But eventually they'll get so far away
and their signals so small, but
123
00:09:41.200 --> 00:09:45.399
not even our dishes will detect them
anymore. The signal will be lost in
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the background noise generated by the rest
of the universe in radio frequencies, and
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then they'll just keep going. Eventually, those two spacecraft traveling through our galaxy
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will leave our whole system well behind, leave the stars of our able behind.
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00:10:00.679 --> 00:10:05.720
They'll be the last reminder actually that
we ever existed. They'll outlast the
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00:10:05.759 --> 00:10:09.399
Earth and outlast the Sun, and
the last reminder of humanity's placed in the
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00:10:09.480 --> 00:10:11.639
universe, which is why the great
science seems. Back At that time,
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00:10:11.679 --> 00:10:16.960
particularly Carl Sagan and John Calliffe created
the Golden Records on board both Voyager spacecraft
131
00:10:18.039 --> 00:10:24.600
with a record of music and literature
and languages, cultures, and a little
132
00:10:24.799 --> 00:10:30.240
time capsule a story about humanity.
And it was sort of a hopeful thing,
133
00:10:30.360 --> 00:10:33.320
promising thing that we're sending a message
in a little tiny spacecraft bottle often
134
00:10:33.360 --> 00:10:37.399
too, the universe, that vast
ocean of space, in a hopeful port
135
00:10:37.480 --> 00:10:39.840
that maybe if there is somebody out
there, they'll find it and learn a
136
00:10:39.840 --> 00:10:43.879
little bit about us. Even if
we're already long gone and the Pioneers are,
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00:10:43.919 --> 00:10:46.080
we still able to talk to them
at all. I know they were
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being used for a little while to
test receivers ability to pick up faded signals.
139
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What's happening there for the Pioneer spacecraft, they have long since gone silent,
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00:11:00.480 --> 00:11:05.600
much smaller spacecraft, less powerful transmitters
than the voyages. The last contact
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00:11:05.679 --> 00:11:11.679
we had with the Pioneer ten was
back in two thousand and two. So
142
00:11:11.759 --> 00:11:15.720
that was the last whisper for that
spacecraft. I'm sure it's probably still out
143
00:11:15.759 --> 00:11:20.039
there. We're certainly still out there, and maybe even still a faint amount
144
00:11:20.080 --> 00:11:22.879
of power for its radio transmitter,
but we simply cannot detect it anymore.
145
00:11:22.960 --> 00:11:28.279
So if they also carry on board
plat with a little bit of information about
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00:11:28.360 --> 00:11:31.440
who built them, where they came
from, and our understandings of science and
147
00:11:31.519 --> 00:11:37.039
mathematics, so maybe another little hopeful
message out to anybody that might be there
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00:11:37.080 --> 00:11:39.480
in the universe. Are they heading
for interstellar space as well? They will
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00:11:39.720 --> 00:11:46.559
eventually in a sour space, but
they don't quite have the speed the Voyager
150
00:11:46.600 --> 00:11:52.480
spacecraft, which are traveling at about
nearly seventeen kilometers per second, so they
151
00:11:52.480 --> 00:11:56.759
won't reach escape velocity for the ultimately
for the entire Solar System, so they
152
00:11:56.759 --> 00:12:01.600
will stay massive soul or for many
buildings of years to come. Okay,
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00:12:01.679 --> 00:12:05.759
and I guess the only other one
then we'll be new horizons. Yeah,
154
00:12:05.799 --> 00:12:09.799
for the New Horizon spacecraft which visited
Pluto back in twenty fifteen, and then
155
00:12:09.840 --> 00:12:15.000
the hyper vault jac Aracost in twenty
nineteen. It has certainly the kvelocity of
156
00:12:15.039 --> 00:12:18.600
the Solars so one day we'll reach
the inner Edge and travel through the Hilio
157
00:12:18.679 --> 00:12:24.240
Sheath boundary the magnetisphere in our Solar
System and ultimately enter interstellar space. But
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00:12:24.399 --> 00:12:28.320
whether that mission is still operable by
that time, and it's taken the Voyager
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spacecraft, you know, more than
forty years, in forty six years now
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to reach into stellar space, we've
still got a long way to go for
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the new Horizon spacecraft, which is
only launched in two thousand and six,
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so it's still got a long way
to go to reach that malster. You
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guys are constantly preparing for new missions. What's on your horizon? So coming
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up actually later in August, we've
got the landing of the Indian Space Agencies
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changed around three spacecraft making their latest
attempt to land on the surface of the
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Moon, and we'll be directly involved
in the landing as we have been right
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throughout the mission since launched. In
September, we've got the return of NASA's
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Osiris REX mission, returning samples from
the asteroid Benu, which will be very
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exciting to add to our knowledge of
those little space wanderers out there, and
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Benu's of particular interest to scientists and
understand more about its composition, because Benu
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has an orbit which actually crosses the
Earth's orbit from time to time, so
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knowing more about it's and its structure
and composition, all of us understand a
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bit more than what we might need
to do if that object one day might
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actually come our way. And then
October a big mission for the year,
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and that's the launch of the Psyche
mission from NASA, heading off to the
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asteroid known as Psyche, which the
science team believes it's the remains of the
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core of a planet that was once
forming in our soul system a long time
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ago, but effectively an object that
ran out of material to grow to become
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a larger world, and then successive
bombardments of that surface with smaller objects have
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blasted away a sort of outer surface
and left behind just the metal iron core.
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So this is going to be a
really unique mission. We can't get
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to the core of a planet,
we can't drill thousands of kilometers into the
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Earth, so getting to have a
sort of his one we made it earlier
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out there in the space. The
asteroid Psyche gives us a chance to go
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and have a look at these objects
and understand more about the formation of planet.
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That's the CSIROS Glen Nagle from NASA's
caberra At Deep space tracking station and
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this space Time still to come claims
Earth's plate tectonics have recently undergone a fundamental
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change and a new mission to the
International Space Station. Oh that and more
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still to come on space time.
A new study claims that planet Earth's system
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of plate tectonics was until recently stratified
into two distinct layers. The revolutionary new
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findings were reported in the journal Nature. Suggests the planet originally had separate upper
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and lower mantle regions that were isolated
from each other. The Earth is truly
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unique among our Solar Systems planets.
It has vast oceans and abundant life.
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But Earth's also unique because it's the
only planet with plate tectonics, and that
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not only shaped its geology, its
climate, and atmosphere, but possibly it
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also influenced the evolution of life.
Plate tectonics describes the movement, interaction,
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and subduction of tectonic plates on the
Earth's surface. That movement is driven by
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the very slow creeping motion of the
Earth's mattle called convection, which carries heat
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from the interior of the planet to
its surface. Researchers believe that convection in
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the mantle, started shortly after the
Earth's formation four point five billion years ago,
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occurs at the scale of the entire
mantle, so when plates collide on
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the Earth's surface, one gives way
and sinks into the hot mantle, ending
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up in a sort of plate graveyard
on the top of Earth's metallic core.
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However, a new study suggest that
this style of plate tectonics may actually be
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a more recent feature in earths geologic
history than previously thought. One of the
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studies authors, Martin Schillett, from
the University of Copenhagen, says the new
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research suggests that foremost of Earth's history, convection in the mantle was stratified into
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two distinct layers, namely upper and
lower mantle regions, that were virtually isolated
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from each other. This transition between
the upper and lower mantle occurs at about
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six hundred and sixty kilometers below the
Earth's surface. Now, at this depth,
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certain minerals undergo phase transition, and
Schiller and colleagues believe that this phase
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transition may well be the reason and
why the upper and lower mantle origins remain
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mostly isolated. The findings indicate that
in the past, recycling and mixing of
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the subductive plates into the mattle was
restricted to just the upper matal where there
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is strong convection, and this is
very different from how the authors believe plate
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technonics operates today, where subducting plates
can sink all the way down in the
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lower matle, just above the core
metal boundary. Chiller and colleagues reach their
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conclusions after developing a new method to
produce ultra high precision measurements of the isotopic
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composition of the element titanium in various
rocks. Isotobes are versions of the same
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element that have slightly different masses,
and the isotopic composition of titanium is modified
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when crust is formed on the Earth, and this mixed titanium isotobes useful to
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trace how surface material like the crust
is recycled into themantle through geologic time.
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Using this new technique, the authors
were able to determine the composition of mantle
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rocks that formed the earliest three point
eight billion years ago all the way through
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to modern day lavas. If the
recycling and mixing of tectonic plates was restricted
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to just the upper mantle. As
postulated in this new study, it means
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that the lower mantle could contain undisturbed
primordial material. The concept of a primordial
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mantle refers to a reservoir of mantle
material that's remained relatively unchanged and therefore preserved
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since the very early days of Earth's
formation four point five billion years ago.
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That's when the even earlier proto Earth, which formed four point six billion years
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ago, was hit by a Mars
sized planet called Thea, which turned the
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whole thing back into a magma ocean, resetting the clock for differentiation and eventually
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separation of the planet. It's a
separate outer and inner cause, mantle and
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crust. Now, the very idea
of a primordial reservoir existing deep in the
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Earth isn't new. It's been suggested
previously based on the isotopic composition of rare
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gases trapped in lavas from modern day
deep seated volcanoes. However, the interpretation
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of this state has always been ambiguous, and some have suggested the isotopic signal
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comes all the way from the Earth's
core as opposed to the deep mantle.
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But because we know titanium isn't present
in the Earth's core. It therefore provides
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a fresh perspective on this long standing
debate. It's an interesting result this space
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time still to come a new mission
to the International Space Station, and later
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in the science report, Australia to
supply the United States military with a new
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generation of guided missile. All that
and more store to come on spacetime.
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The Northrop grumm Signus ND nineteen cargo
ship carrying some three thousand kilograms of supplies
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as successfully docked to the International Space
Station. The mission, which launched from
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00:20:10.920 --> 00:20:15.839
NASA's Wallops Island flight facility on the
Virginian mid Atlantic Coast, was Northrop Grumman's
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nineteenth cargo flight to the Space station
and it's eighth under its second commercial resupply
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services contract with NASA four three two
one DOT and Terry's Invent ninety falls Tip
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00:20:34.440 --> 00:20:42.039
Authority ferries taking north of Grumman's commercial
resupply mission nineteen into urban to the International
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Space Station remains. Flight controllers reporting
a nominal ascent for in Terry's at a
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prenominal humber pressure stations no remain as
rust steady is on TVC is on at
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are nominal GLAD to be the main
phenomenal hundred powers nominal a vehicle passing improved
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00:21:03.359 --> 00:21:10.839
magical good without passing through MAXCU.
MAXCU is the maximum dynamic pressure experienced on
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00:21:11.039 --> 00:21:15.839
terries. Corp pressure reization valves are
nominal. Engines are main nominal stay LCA,
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your co cut speed in Terris,
Thank you LA. Half through the
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burn one hundred seconds to MIKO passing
through thirty thousand feet attitude nominal attitude rains
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nominal engine remains nominal SAT eight hundred
percent passing through five thousand feet per second.
258
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Corp pressurization remains nominal. Electrical powers
nominal TVC remains nominal. Engines remain
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00:21:33.480 --> 00:21:37.640
nominal for proximity. Forty seconds from
MICA flow throttled down has begun. Attitude
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nominal TBC pre set down SLEW has
started. Three minutes into the flight of
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terries. We had about fifteen seconds
until main engine cutoff down STADA fifty five
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percent thrust and we have main engine
cutoff. Elvis is taking care of business.
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We have stage separation confirmed Stage separation
as we lose terries into the clouds
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on this hazy evenings. Stage two
agmission time expected at mission time tooty.
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Stage two ignition expected and approximate ten
seconds varying is separated and Terry's currently in
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a coast phase. Stage two ignition
and TVC batteries nominal. Second stage solid
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00:22:14.920 --> 00:22:18.000
rocket motor has ignited. Remains normal. The stage will burn for two minutes
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and forty four seconds. The castor
thirty XL will burn from approximate two point
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five minutes. Power remains nominal.
Stage two TVC is nominal. Fly controllers
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report reporting good performance on the second
stage. Power remains nominal. TVC remains
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nominal in stage two and power approximate
one hundred seconds from stage two burnout at
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a troop phil nominal power remains nominal. Stage two TVC remains nominal. Fifty
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seconds to stage two burno TBC elect
for power remain nominal. Beginning to see
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tailoff and motor pressure and we have
stage two burnout six minutes fifty five seconds
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into the flight. The second stage
solid rocket motor has burned out. As
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enabled. They will enabled now entering
about approximately a two minute coast phase is
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an orbit and will coast for roughly
one hundred seconds prior to biload separation seven
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minutes forty five seconds into the flight
of Entries. After spacecraft separation, it
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will take approximately two hours thirty minutes
until the solar arrays are unfurled to start
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collecting power for the Signus vehicle.
Spacecraft separation is coming up on thirty seconds
281
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continuous to coast prior to biload seperation, and we have baiload separation and the
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flight control teams confirmed Signus has separated
from the Entries second second stage, flying
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free and beginning its journey to the
International Space Station. All right, launch
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team, I'll see on countdown that
we're going to go ahead and proceed with
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our post launch checklist. We've confirmed
that we've had SIGNS separation. Congratulations to
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the SIGNA team. This mission also
marked the final flight for the Entire's two
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thirty rocket, originally developed by Obital
Science as the Tourists too. A new
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version of the rocket, to be
known as the Entirees three third using a
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Firefly Aerospace first stage, was expected
to launch next year, but the LEAs
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in development have now pushed that launch
date back to the twenty three mission in
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twenty twenty five, so to fill
the gap, at least three Signals missions
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will be launched aboard SpaceX Falcon nine
rockets instead. That means that, as
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well as launching its own Dragon cargo
ships to the International Space Station, the
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Dragon crew capsules transporting astronauts, SpaceX
will also be firing at least three missions
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for its competitor Northrop Grumman. As
to what happens with the other two teams
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contracted to fly to the International Space
Station, namely Boeing Starline A transporting crews
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aboard an Atlas now Vulcan rocket and
Sierra Nevada's Cream Chaser reusable lifting body space
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plane, well there both will behind
schedule, although birth are still expected to
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fly sometime. We'll have updates on
both those projects next week. The supply
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is being brought to the space station
aboard the NG nineteen signals will support dozens
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of research experiments now being undertaken by
the Expedition sixty nine crew. These include
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new gene therapy tests designed to demonstrate
the formation of three dimensional neuron cell cultures
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in microgravity and to test a neuron
specific gene therapy. Also aboard is the
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sixth spacecraft fire experiment that's the last
in a series to test flammability of different
305
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oxygen levels and to demonstrate fire detection
and monitoring, as well as post fire
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cleanup capabilities. That's an experiment that
will take place aboard the Sigma's cargo ship
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after that spacecraft is departed from the
International Space Station. Another experimental measure atmospheric
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density using a multi needle aMule probe
to monitor plasma densities in the ionosphere that's
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where the Earth's atmosphere meat space.
The flights also delivered a new improved water
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sterilization and sanitation unit. It'll reduce
microbial growth in stored water supplies and can
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also provide heartwater for crew consumption and
for food pre operation. And there's also
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an old friend return of the space
station, a little cube shaped robotic helper
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called astrob. It's been sent back
into orbit after some modifications in order to
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help out with routine tasks. Signals
has also delivered a condensation module and heat
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transfer system for a flow boiling condensation
experiment that will help scientists better understand heat
316
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distribution and fluid space. And there's
also an upgrade Banessa's colde Atom Lab quantum
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physics facility, which makes use of
the microagravity environment of the space station to
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study quantum phenomena in ways which simply
at possible on Earth. The upgrade will
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give scientists more data in a wider
variety of experimental conditions. Once it's all
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unloaded, the Signal spacecraft will be
loaded with space station refuse and in October
321
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it'll depart the space station loaded with
several thousand kilograms of trash and will then
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burn up in the atmosphere this space
time and time. How to take a
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brief look at some of the other
stories making news and science this week with
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a science report. Australia has entered
into a new deal with the United States
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just apply the US military with a
new generation of guided missiles and multiple rocket
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launch systems. Under the agreement,
Australia will need to begin manufacturing the missiles
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within two years. The Australian government
recently set a side two point seven billion
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dollars to acquire a long range strike
capability, which would bolster Australian stockpiles and
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could also be exported to the United
States and other friendly nations. The announcement
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comes as Western nations continue to deplete
their own munitions and logistics reserves in the
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ongoing conflict again Russian invasion of Ukraine
that war is exposing weaknesses in many Western
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military supply chains, which are now
starting to run low on ammunition and missiles.
333
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The missile announcement was made during a
two day Australian US meeting held in
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the shadows of the vast Talisman Saber
Joint military exercise in Northern Australia. Talisman
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Sabers see the deployment of over thirty
thousand military personnel from Australia, the United
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States, the United Kingdom, Canada, Germany, France, Japan, South
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Korea and several Pacific island nations.
It comes as Australia is forced to embark
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on its own armed forces overhaul and
build up, moving towards long range strike
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capabilities in an effort to keep China
at arms length. Beijing's undertaken a massive
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expansion of its military, both in
terms of conventional firepower and in nuclear weapons.
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China now operates the world's largest military
and aggressively targets any nation entering the
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South China Sea, which it now
claims to have taken possession of country to
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international law. As part of the
new deal between Camera and Washington, Australia's
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agreed to an American request to expand
to military bases in the strategically important north
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end of the country, thereby allowing
them to host more training exercises and increased
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rotations of American troops and warships.
Both nations will also continue working towards using
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Australia as a safe forward base for
the storage, maintenance, repair, an
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overhaul of critical US source munitions and
weapons systems. The meeting also discussed progress
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on the Orcus Security treaty between Australia, the United States and the United Kingdom
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that'll see Australia built its own nuclear
submarines and purchase at least three US never
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Virginia class subs Congress permitting. As
part of the deal, Australia will share
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its hypersonic rocket and missile technology with
the United States. A world first for
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ability study conducted in Australia through a
joint public private sector collaboration has realized the
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potential of DNA sequencing to expand and
improve population newborn screening. The findings are
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reported in the journal Critical Chemistry.
Examine the feasibility of targeted gene sequencing by
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screening all newborns at or shortly after
birth for multiple genetic conditions in a single
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test. The technology is based on
next generation GENA sequencing tools, allowing hundreds
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of genes to be simultaneously analyzed for
variations that cause genetic diseases. Scientists have
359
00:30:37.440 --> 00:30:41.519
identified a gene variant common in people
who experience no symptoms when they get COVID
360
00:30:41.640 --> 00:30:45.960
nineteen. The findings are reported in
the journal Nature. Looked at one hundred
361
00:30:45.960 --> 00:30:51.559
and thirty six people who reported no
COVID symptoms, finding one in five carried
362
00:30:51.599 --> 00:30:56.799
a gene variant named hla b star
fifteen zero one, which is involved in
363
00:30:56.880 --> 00:31:00.880
immune responses. In a separate arm
of the study, Situs found T cells
364
00:31:00.960 --> 00:31:06.359
that reacted to some fragments of COVID
nineteen in people with the gene variant who
365
00:31:06.440 --> 00:31:11.079
had never had COVID nineteen, suggesting
they may have developed some form of immunity
366
00:31:11.119 --> 00:31:17.440
to COVID nineteen through previous exposure to
other infections. Almost seven million people have
367
00:31:17.559 --> 00:31:22.920
now been killed by the COVID nineteen
coronavirus since it was first detected near China's
368
00:31:22.000 --> 00:31:29.640
Wuhan Institute of Virology around September twenty
nineteen. The World Health Organization estimates the
369
00:31:29.720 --> 00:31:33.720
true death toiles likely to be around
eighteen million, with some seven hundred and
370
00:31:33.799 --> 00:31:41.480
seventy million confirmed cases globally, that's
ten percent of the world's population. Well,
371
00:31:41.599 --> 00:31:45.079
with all the talk of unexplained anomalous
phenomena across the United States at the
372
00:31:45.160 --> 00:31:49.759
moment, a Washington State resident can
almost be forgiven for thinking she saw what
373
00:31:51.079 --> 00:31:56.000
must have been a U foe one
morning. Instead, however, she's discovered
374
00:31:56.039 --> 00:32:00.759
a new level of embarrassment in public
humiliation after posting a video online of what
375
00:32:00.000 --> 00:32:07.319
she claimed was an alien spacecraft.
The rather bulbous rocket shaped unidentified flying object
376
00:32:07.559 --> 00:32:12.799
was spotted hovering silently above the tree
line in the golden morning sunlight. The
377
00:32:12.880 --> 00:32:17.119
woman filming the incident described the object
as enormous, very fat, and appearing
378
00:32:17.160 --> 00:32:22.200
to have fins coming out of the
bottom. Possibly it's an alien mothership,
379
00:32:22.839 --> 00:32:25.960
timentum from a Straian skeptic says,
In reality, it was a hot air
380
00:32:27.039 --> 00:32:30.799
balloon shaped like a comical fat rocket. It's been operated for the past sixteen
381
00:32:30.920 --> 00:32:37.680
years by a local hot air balloon
company. Well, actually usists. They
382
00:32:37.680 --> 00:32:42.519
actually started Bend Washington, didn't they. Of course, yes, the Arnold
383
00:32:42.559 --> 00:32:45.480
flying source of things. They started
up in brand Washington near Mount Rainier.
384
00:32:45.599 --> 00:32:50.440
Again, this is sort of silly
stories you get all the time people who
385
00:32:50.559 --> 00:32:52.559
film something, and people can film
everything all the time these days, so
386
00:32:52.640 --> 00:32:57.799
they're carrying the camera in their pocket
and they'll film something and they'll instantly put
387
00:32:57.839 --> 00:33:00.920
it up on Facebook or wherever there
for them and say, look, this
388
00:33:00.079 --> 00:33:04.519
is mysterious. It cannot be explained. And some of them can't be explained
389
00:33:04.519 --> 00:33:07.119
because you just don't have any detail, and therefore you have to leave it
390
00:33:07.160 --> 00:33:09.160
as unexplained. It's a lot of
people don't understand what that means. In
391
00:33:09.279 --> 00:33:14.119
newfos, it's unidentified for a reason
you can't explain. It doesn't mean it's
392
00:33:14.119 --> 00:33:16.440
the flying ser but anyway, that's
a different issue. But people keep putting
393
00:33:16.480 --> 00:33:20.519
up these videos of things they've seen, and of course instantly everyone goes,
394
00:33:20.559 --> 00:33:23.079
oh, well, the flying scer. Someone saw this shape that looked to
395
00:33:23.160 --> 00:33:28.759
be a huge round dish elongated shape
floating in the sky and they seem to
396
00:33:28.799 --> 00:33:30.799
have fins off it, and someone
said that looks like an alien rocket,
397
00:33:30.880 --> 00:33:35.079
and someone pointed out, it's not
an alien rocket. It's a balloon that
398
00:33:35.240 --> 00:33:37.559
looks like a rocket with fin Someone
designed it that way and they's you've seen
399
00:33:37.640 --> 00:33:40.599
these hot air balloons and things like
that. They often designed to look at
400
00:33:40.599 --> 00:33:44.960
the most amazing shapes, and this
one someone had designed it to look like
401
00:33:45.160 --> 00:33:47.880
a rocketship vertical, the fins coming
out the side, and someone had filmed
402
00:33:47.880 --> 00:33:51.480
that. And because they instantly assume, I don't know what it is there
403
00:33:51.480 --> 00:33:52.920
for it must be a flying sorcer
for an alien of some sort, they
404
00:33:52.960 --> 00:33:57.160
put it up and everyone believes it. And these things take about oh ten
405
00:33:57.240 --> 00:34:00.400
seconds to debunk. And if a
person who had put it up thought about
406
00:34:00.400 --> 00:34:01.920
it for ten seconds, they might
have hesitated. But if you're the sort
407
00:34:01.960 --> 00:34:06.880
of person who believes in UFOs,
and this was described as a mothership UFOs.
408
00:34:07.319 --> 00:34:09.280
Mothership's a good term to use because
it's big rather than a little thing
409
00:34:09.320 --> 00:34:14.760
whizzing ran and it was very strange, very silly, very jumped to conclusions,
410
00:34:14.960 --> 00:34:16.559
and a lot of pilpa who would
believe it because it's just strange that
411
00:34:16.639 --> 00:34:27.159
therefore they instantly say strange alien rather
than strange funny looking balloon. That's timendum
412
00:34:27.440 --> 00:34:30.639
from Australian skeptics. And you can
see a picture of the hot air balloon.
413
00:34:30.719 --> 00:34:35.719
Come you have a mothership on our
website. Just go to the Spacetime
414
00:34:35.840 --> 00:34:55.320
Tumbler blog and that's the show for
now. Spacetime is available every Monday,
415
00:34:55.400 --> 00:35:00.760
Wednesday and Friday through Apple podcast,
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Music, bytes dot com, SoundCloud YouTube,
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00:35:07.320 --> 00:35:13.079
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00:35:13.920 --> 00:35:17.679
Spacetime's also broadcast through the National Science
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on both iHeartRadio and tune In Radio. And you can help to support our
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Just go to Spacetime with Stewart Gary
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425
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you want more Spacetime, please check
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426
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stuff we couldn't fit in the show, as well as heaps of images,
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news stories, loads of videos and
things on the whereby find interesting or amusing.
428
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Just go to Spacetime with Stewart Gary
Tumbler dot com. That's all one
429
00:36:01.840 --> 00:36:06.920
word and that's Tumbler without the E. You can also follow us through at
430
00:36:06.960 --> 00:36:10.639
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00:36:10.719 --> 00:36:15.159
our Spacetime YouTube channel, and on
Facebook. Just go to Facebook dot com,
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00:36:15.400 --> 00:36:21.360
forward slash Spacetime with Stewart Gary and
Spacetime is brought to you in collaboration
433
00:36:21.480 --> 00:36:25.960
with Australian Sky Telescope magazine. Your
Window on the Universe. You've been listening
434
00:36:27.039 --> 00:36:32.039
to Spacetime with Stuart Gary. This
has been another quality podcast production from bites dot com
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