May 23, 2025

Unraveling Dark Matter’s Origins, Mars’ Stunning Aurora Discovery, and New X-Ray Mysteries

Unraveling Dark Matter’s Origins, Mars’ Stunning Aurora Discovery, and New X-Ray Mysteries
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Unraveling Dark Matter’s Origins, Mars’ Stunning Aurora Discovery, and New X-Ray Mysteries

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This episode of SpaceTime delves into groundbreaking discoveries and theories that reshape our understanding of the universe, including the origins of dark matter, the first visible light auroras on Mars, and new insights into massive X-ray explosions near supermassive black holes.

The Birth of Dark Matter Explained

A new hypothesis suggests that dark matter, which constitutes about 85% of the universe's mass, may have originated from massless particles that condensed as they slowed down. This theory, outlined in the journal Physical Review Letters, proposes that these particles formed during the early universe's chaotic conditions, akin to steam turning into water. We discuss how this model could be tested using existing cosmic microwave background radiation data, potentially revolutionizing our understanding of dark matter's properties and formation.

Visible Light Auroras on Mars

In a historic achievement, NASA's Perseverance rover has captured the first visible light auroras on Mars, confirming long-held theories about Martian atmospheric phenomena. This event, triggered by a massive solar flare, opens up new avenues for auroral research and suggests that future astronauts could witness these stunning displays on the Martian surface. We explore the implications of this discovery and how it enhances our understanding of solar interactions with planetary atmospheres.

Quasiperiodic Eruptions: A New Type of X-ray Explosion

Astronomers have identified a new type of X-ray outburst known as quasiperiodic eruptions, occurring near supermassive black holes. Observed in a galaxy 300 million light-years away, these eruptions exhibit a unique pattern, with events occurring every 4.5 days. We discuss the mechanisms behind these eruptions and their significance in understanding the dynamics of black holes and their surrounding environments.

www.spacetimewithstuartgary.com ( https://www.spacetimewithstuartgary.com/)

✍️ Episode References

Physical Review Letters

https://journals.aps.org/prl/ ( https://journals.aps.org/prl/)

Science Advances

https://www.science.org/journal/sciadv ( https://www.science.org/journal/sciadv)

Astrophysical Journal

https://iopscience.iop.org/journal/0004-637X ( https://iopscience.iop.org/journal/0004-637X)

Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support ( https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) .

00:00 This is Space Time Series 28, Episode 62 for broadcast on 23 May 2025

01:00 New theory explaining the birth of dark matter

12:15 First visible light auroras detected on Mars

20:30 Discovery of quasiperiodic eruptions near supermassive black holes

30:00 Science report: AI chatbots exaggerate research summaries

Episode link: https://play.headliner.app/episode/27275484?utm_source=youtube

00:00 - This is Space Time Series 28, Episode 62 for broadcast on 23 May 2025

01:00 - New theory explaining the birth of dark matter

12:15 - First visible light auroras detected on Mars

20:30 - Discovery of quasiperiodic eruptions near supermassive black holes

WEBVTT
Kind: captions
Language: en

00:00:08.160 --> 00:00:11.589
This is Spacetime series 28 episode 62


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for broadcast on the 23rd of May


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2025. Coming up on Spacetime, a new


00:00:17.440 --> 00:00:19.189
theory to explain the birth of dark


00:00:19.199 --> 00:00:21.750
matter, the first visible light auroral


00:00:21.760 --> 00:00:24.950
activity seen on Mars, and a new type of


00:00:24.960 --> 00:00:27.670
massive X-ray explosion discovered near


00:00:27.680 --> 00:00:30.470
monster black holes. All that and more


00:00:30.480 --> 00:00:33.990
coming up on Spaceime.


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Welcome to Space Time with Stuart Garry.


00:00:45.830 --> 00:00:53.110
[Music]


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A new study claims that the invisible


00:00:55.280 --> 00:00:56.950
mysterious substance known as dark


00:00:56.960 --> 00:00:58.790
matter may have formed when fast


00:00:58.800 --> 00:01:01.750
particles slowed down and got heavy. A


00:01:01.760 --> 00:01:03.830
new hypothesis reported in the journal


00:01:03.840 --> 00:01:05.670
Physical Review Letters suggests that


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dark matter, which makes up some 85% of


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all material in the universe, sprang up


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from particles that rapidly condensed,


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sort of like steam turning into water.


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Of course, scientists still have no idea


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exactly what dark matter is. They only


00:01:19.360 --> 00:01:21.030
know it exists because they can see its


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gravitational influence on normal


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so-called barriionic matter, stopping


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galaxies from spinning apart as they


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rotate and magnifying distant objects.


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The study's authors say dark matter


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could have formed in the early life of


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the universe from the collision of high


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energy massless particles that lost


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their zip and took on an incredible


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amount of mass immediately upon pairing.


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Importantly, they claim their hypothesis


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can be tested using existing


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observational data. The extremely low


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energy particles they suggest make up


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dark matter would have a unique


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signature in the cosmic microwave


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background radiation. The leftover


00:01:54.320 --> 00:01:56.230
energy from the Big Bang, which fills


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the universe today as a faint glow. The


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study's lead author, Robert Cordwell


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from Dartmouth College, says dark matter


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started its life as near massless


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relativistic particles similar to


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photons. Now, that's totally different


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to what dark matter is thought to be.


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Cold lumps that give galaxies their


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mass. Cordwall says this new idea tries


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to explain how dark matter went from


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being light to being lumpy. These


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particles were similar to photons,


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massless particles that are the basic


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energy or quant of light. And it was in


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this early chaos that extremely large


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numbers of these particles bonded to


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each other. Cordwall and colleagues


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theorized that these massless particles


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were pulled together by the opposing


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directions of their spin. Sort of like


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the attraction between the north and


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south poles of a magnet. As the


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particles cooled, an imbalance in the


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particles spins caused their energy to


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plummet like steer rapidly condensing


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into water. And the outcome was the cold


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heavy particles that scientists now


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think constitute dark matter. Now, the


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most unexpected part of this


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mathematical model was the energy


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plummet that bridges the high density


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energy and the lumpy low energy.


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Cordwell says at this stage, it's like


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these pairs were getting ready to become


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dark matter. And this phase transition


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helps explain the abundance of dark


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matter being detected today. It all


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sprang from high density clusters of


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extremely energetic particles in the


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early universe. The study introduces a


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theoretical particle that would have


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initiated the transition to dark matter.


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thing is scientists already know that


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electrons can undergo a similar


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transition. See at low temperatures two


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electrons can form what are known as


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Koopa pairs that can conduct electricity


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without resistance and are the active


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mechanism in certain


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superconductors. In fact the authors


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site the existence of Kooper pairs as


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evidence that the massless particles in


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their theory would have been capable of


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condensing into dark matter. They look


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towards superconductivity for clues as


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to whether a certain interaction could


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cause energy to drop so suddenly. And


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Koopa pairs are the proof that this


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mechanism exists. The metamorphosis of


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these particles from the cosmic


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equivalent of a double espresso into day


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old oatmeal explains the vast deficit in


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the energy density of the current


00:04:07.360 --> 00:04:10.149
universe compared to its early days.


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Scientists know that density has


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declined since the big bang as the


00:04:13.439 --> 00:04:16.069
universe's energies expanded outwards.


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But the author's new idea also accounts


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for the increase in the density of mass.


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They say structures get their mass due


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to the density of cold dark matter. But


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there also has to be a mechanism wherein


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energy density drops close to what we


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see around us today. And their theory


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suggests that the particle pairs entered


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a cold nearly pressureless state as they


00:04:37.520 --> 00:04:39.830
got slower and heavier. And this


00:04:39.840 --> 00:04:41.670
characteristic would make them stand out


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in the cosmic microwave background


00:04:43.520 --> 00:04:45.670
radiation. The cosmic microwave


00:04:45.680 --> 00:04:47.909
background radiation has been studied by


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several large scale projects and the


00:04:50.560 --> 00:04:52.390
authors say both existing and future


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data from these projects could be used


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to test their ideas. This is spaceime.


00:04:58.880 --> 00:05:00.870
Still to come, the first visible light


00:05:00.880 --> 00:05:03.670
aurora seen on Mars and a new type of


00:05:03.680 --> 00:05:06.070
massive X-ray explosion discovered near


00:05:06.080 --> 00:05:08.390
monster black holes. All that and more


00:05:08.400 --> 00:05:10.690
still to come on


00:05:10.700 --> 00:05:25.230
[Music]


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Spaceime. NASA's Mars Perseverance


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rovers made history by detecting visible


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light auroral activity on another planet


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for the first time. The detections were


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made during March last year near the


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peak of the current solar cycle and they


00:05:39.520 --> 00:05:41.749
were confirmed by NASA's Mars orbiting


00:05:41.759 --> 00:05:44.390
Maven spacecraft. The event reported in


00:05:44.400 --> 00:05:45.990
the journal Science Advances was


00:05:46.000 --> 00:05:47.830
triggered by a massive solar flare on


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the sun which generated a chronal mass


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ejection, a huge explosion of gas and


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magnetic energy that carries vast


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amounts of solar energetic particles out


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into space. And this solar activity led


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to stunning auroral displays across the


00:06:01.759 --> 00:06:04.230
solar system, including on Mars, where


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the six world cars size Perseverance


00:06:06.319 --> 00:06:08.830
rover saw them in the skies above Jezro


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Crater. The study's lead author, Elise


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Nudson from the University of Oslo, says


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the discovery opens up new possibilities


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for auroral research and confirms that


00:06:17.759 --> 00:06:19.749
aurora could be visible to future


00:06:19.759 --> 00:06:22.550
astronauts on the Martian surface. On


00:06:22.560 --> 00:06:24.629
Earth, auroray form when solar particles


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interact with the planet's global


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magnetic field, funneling these


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particles towards the poles along


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magnetic field lines, during which time


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they collide with atoms and molecules in


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the Earth's atmosphere, emitting light.


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The most common colors seen in Earthly


00:06:37.919 --> 00:06:40.070
aurora is green, caused by collisions


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with oxygen atoms. For years, scientists


00:06:42.960 --> 00:06:44.870
have theorized that green light auroras


00:06:44.880 --> 00:06:47.189
would also exist on Mars, but suggested


00:06:47.199 --> 00:06:49.110
they would be much fainter and harder to


00:06:49.120 --> 00:06:51.110
capture than the green auroral activity


00:06:51.120 --> 00:06:53.670
seen on Earth. Now, due to the red


00:06:53.680 --> 00:06:55.510
planet's lack of a global magnetic


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field, Mars has a different type of


00:06:57.600 --> 00:06:59.589
auroral activity to what we see on


00:06:59.599 --> 00:07:02.150
Earth. These include solar energetic


00:07:02.160 --> 00:07:03.749
particle aurora, which may have been


00:07:03.759 --> 00:07:06.790
discovered in 2014. These occur when


00:07:06.800 --> 00:07:08.469
superenergetic particles from the sun


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hit the Martian atmosphere, causing a


00:07:10.240 --> 00:07:11.990
reaction that makes the atmosphere glow


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across the entire night sky. Now, while


00:07:14.720 --> 00:07:16.790
Maven's already observed solar energetic


00:07:16.800 --> 00:07:18.790
particle aurora and ultraviolet light


00:07:18.800 --> 00:07:21.029
from Mars, the phenomenon's never been


00:07:21.039 --> 00:07:22.629
observed in visible light from the


00:07:22.639 --> 00:07:25.189
ground. Since solar energetic particle


00:07:25.199 --> 00:07:27.029
aurori typically occur during solar


00:07:27.039 --> 00:07:29.029
storms, which increase during solar


00:07:29.039 --> 00:07:31.510
maximum, like what we're in now, Mudson


00:07:31.520 --> 00:07:33.270
and colleagues set their sights on


00:07:33.280 --> 00:07:35.670
capturing visible images and spectra of


00:07:35.680 --> 00:07:37.830
solar energetic particle aurora from the


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Martian surface at the very peak of the


00:07:40.000 --> 00:07:42.230
sun's current solar cycle. Through


00:07:42.240 --> 00:07:44.150
modeling, Nutson determined the optimal


00:07:44.160 --> 00:07:46.309
angle for the Perseverance rover's super


00:07:46.319 --> 00:07:49.029
cam spectrometer mass cam Z camera to


00:07:49.039 --> 00:07:51.110
successfully observe the solar energetic


00:07:51.120 --> 00:07:53.589
particle aurora in visible light. And


00:07:53.599 --> 00:07:55.430
with this observational strategy now in


00:07:55.440 --> 00:07:57.270
place, it all came down to the timing


00:07:57.280 --> 00:07:59.270
and understanding the physics of coronal


00:07:59.280 --> 00:08:01.670
mass ejections. Scientists with the


00:08:01.680 --> 00:08:03.430
Maven mission determined there was a


00:08:03.440 --> 00:08:05.189
noticeable solar storm heading towards


00:08:05.199 --> 00:08:08.070
the red planet in March 2024, which


00:08:08.080 --> 00:08:09.749
should arrive a few days after the


00:08:09.759 --> 00:08:12.390
initial eruption on the sun. And so they


00:08:12.400 --> 00:08:14.230
issued a Mars space weather alert


00:08:14.240 --> 00:08:16.150
notification to all currently operating


00:08:16.160 --> 00:08:18.790
Mars missions. Few days later that


00:08:18.800 --> 00:08:21.029
coronal mass ejection impacted Mars


00:08:21.039 --> 00:08:22.869
providing a light show for the rover to


00:08:22.879 --> 00:08:24.790
capture and showing the aurora to be


00:08:24.800 --> 00:08:27.909
nearly uniform right across the sky. To


00:08:27.919 --> 00:08:29.990
confirm the presence of solar energetic


00:08:30.000 --> 00:08:31.430
particles during the auroral


00:08:31.440 --> 00:08:32.949
observations, the authors looked to


00:08:32.959 --> 00:08:34.709
Maven's solar energetic particle


00:08:34.719 --> 00:08:36.070
instrument which was additionally


00:08:36.080 --> 00:08:37.990
corroborated by data from the European


00:08:38.000 --> 00:08:40.870
Space Ay's Mars Express Orbiter. That


00:08:40.880 --> 00:08:42.550
data from both orbital missions


00:08:42.560 --> 00:08:44.230
confirmed that the rover team on the


00:08:44.240 --> 00:08:46.389
ground had managed to successfully catch


00:08:46.399 --> 00:08:48.550
a glimpse of the phenomenon in the very


00:08:48.560 --> 00:08:50.269
narrow time window


00:08:50.279 --> 00:08:52.509
available. This is


00:08:52.519 --> 00:08:55.509
spaceime. Still to come, a new type of


00:08:55.519 --> 00:08:57.750
massive X-ray explosion discovered near


00:08:57.760 --> 00:08:59.670
monster black holes and later in the


00:08:59.680 --> 00:09:01.670
science report, confirmation that


00:09:01.680 --> 00:09:04.070
artificial intelligence chatbots


00:09:04.080 --> 00:09:06.230
exaggerate the extent and scope of


00:09:06.240 --> 00:09:09.430
research in scientific papers. All that


00:09:09.440 --> 00:09:12.500
and more still to come on


00:09:12.510 --> 00:09:16.829
[Music]


00:09:16.839 --> 00:09:19.350
Spaceime. This episode of Spacetime is


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NordVPN. And now it's back to our show.


00:10:42.399 --> 00:10:44.389
Astronomers have for the first time


00:10:44.399 --> 00:10:46.230
probed the physical environment of a


00:10:46.240 --> 00:10:47.990
recently discovered new type of


00:10:48.000 --> 00:10:50.389
repeating X-ray outburst found to exist


00:10:50.399 --> 00:10:53.350
near monster super massive black holes.


00:10:53.360 --> 00:10:55.590
These massive X-ray flares have been


00:10:55.600 --> 00:10:58.389
named quasi periodic eruptions.


00:10:58.399 --> 00:11:00.069
Astronomers recently observed these


00:11:00.079 --> 00:11:02.470
events in a system named Ansky which is


00:11:02.480 --> 00:11:04.630
located in a galaxy about 300 million


00:11:04.640 --> 00:11:06.550
lighty years away in the constellation


00:11:06.560 --> 00:11:09.030
Virgo. This event was the first


00:11:09.040 --> 00:11:11.110
indication that something unusual might


00:11:11.120 --> 00:11:14.310
be happening. It was the eighth and so


00:11:14.320 --> 00:11:16.150
far most powerful quasi periodic


00:11:16.160 --> 00:11:18.310
eruption source discovered setting the


00:11:18.320 --> 00:11:19.990
record in terms of both timing and


00:11:20.000 --> 00:11:22.230
duration with eruptions every 4 and 1/2


00:11:22.240 --> 00:11:24.310
Earth days and with each eruption


00:11:24.320 --> 00:11:26.870
lasting around a day and a half. The


00:11:26.880 --> 00:11:28.630
observations were achieved by NASA's


00:11:28.640 --> 00:11:30.470
Neutron Star Interior Composition


00:11:30.480 --> 00:11:32.790
Explorer or NISER telescope which is


00:11:32.800 --> 00:11:34.389
mounted aboard the International Space


00:11:34.399 --> 00:11:36.790
Station. Additional information was


00:11:36.800 --> 00:11:39.030
provided by NASA's Swift Space Telescope


00:11:39.040 --> 00:11:41.430
and NASA's Chandra X-ray Observatory as


00:11:41.440 --> 00:11:43.750
well as the European Space Ay's XMM


00:11:43.760 --> 00:11:46.310
Newton Space Telescope. The study's lead


00:11:46.320 --> 00:11:48.069
author Joan Cheraborti from the


00:11:48.079 --> 00:11:49.829
Massachusetts Institute of Technology


00:11:49.839 --> 00:11:52.310
MIT says these quasyp periodic eruptions


00:11:52.320 --> 00:11:54.509
are both mysterious and intensely


00:11:54.519 --> 00:11:56.790
interesting. One of the most intriguing


00:11:56.800 --> 00:11:59.269
aspects is their quasyp periodic nature.


00:11:59.279 --> 00:12:00.870
See, astronomers are still trying to


00:12:00.880 --> 00:12:02.790
develop the mythologies and frameworks


00:12:02.800 --> 00:12:04.710
needed to understand exactly what's


00:12:04.720 --> 00:12:07.190
causing them. The findings reported in


00:12:07.200 --> 00:12:09.190
the Astrophysical Journal suggest that


00:12:09.200 --> 00:12:11.269
these eruptions occur in systems where a


00:12:11.279 --> 00:12:13.269
relatively low mass object passes


00:12:13.279 --> 00:12:15.269
through the disc of gas surrounding a


00:12:15.279 --> 00:12:17.269
super massive black hole that holds


00:12:17.279 --> 00:12:19.190
hundreds of thousands to billions of


00:12:19.200 --> 00:12:21.509
times the mass of the sun. When the


00:12:21.519 --> 00:12:23.030
lower mass object punches through the


00:12:23.040 --> 00:12:25.350
disc, its passage drives out expanding


00:12:25.360 --> 00:12:27.430
clouds of hot gas, which astronomers


00:12:27.440 --> 00:12:29.750
then observe as quasy periodic eruptions


00:12:29.760 --> 00:12:32.230
in X-rays. Astronomers think the


00:12:32.240 --> 00:12:34.310
eruption's quasi periodicity occurs


00:12:34.320 --> 00:12:36.389
because the smaller object's orbit isn't


00:12:36.399 --> 00:12:38.790
perfectly circular and spirals towards


00:12:38.800 --> 00:12:41.350
the black hole over time. Also, the


00:12:41.360 --> 00:12:43.190
extreme gravity close to the black hole


00:12:43.200 --> 00:12:45.269
warps the very fabric of spaceime,


00:12:45.279 --> 00:12:46.949
altering the object's orbit so they


00:12:46.959 --> 00:12:48.550
don't close on themselves with each


00:12:48.560 --> 00:12:51.110
cycle. Scientists current understanding


00:12:51.120 --> 00:12:52.949
suggest that these eruptions repeat


00:12:52.959 --> 00:12:55.350
until the disc disappears or until the


00:12:55.360 --> 00:12:57.430
orbiting object disintegrates, either of


00:12:57.440 --> 00:13:00.230
which could take several years. Ansky's


00:13:00.240 --> 00:13:02.069
extreme properties may be due to the


00:13:02.079 --> 00:13:03.750
nature of the disc around its super


00:13:03.760 --> 00:13:06.150
massive black hole. In most quasyp


00:13:06.160 --> 00:13:08.389
periodic eruption systems, super massive


00:13:08.399 --> 00:13:10.389
black hole likely shreds the passing


00:13:10.399 --> 00:13:12.470
star, creating a small disc very close


00:13:12.480 --> 00:13:15.190
to itself. But in Ansky's case, the


00:13:15.200 --> 00:13:17.350
authors think the disc is much larger


00:13:17.360 --> 00:13:19.509
and can involve objects further away,


00:13:19.519 --> 00:13:21.310
creating the longer time scales


00:13:21.320 --> 00:13:23.509
observed. Nice position on the


00:13:23.519 --> 00:13:25.670
International Space Station allows it to


00:13:25.680 --> 00:13:28.710
observe Ansky about 16 times every day.


00:13:28.720 --> 00:13:30.629
And this frequency of observations was


00:13:30.639 --> 00:13:32.230
critical in detecting the X-ray


00:13:32.240 --> 00:13:34.470
fluctuations that revealed Ansky was


00:13:34.480 --> 00:13:37.269
producing quasy periodic eruptions. The


00:13:37.279 --> 00:13:39.829
authors used data from Nicer and X-Men


00:13:39.839 --> 00:13:41.430
to map the rapid evolution of the


00:13:41.440 --> 00:13:43.430
ejected material driving the observed


00:13:43.440 --> 00:13:45.590
eruptions in unprecedented detail by


00:13:45.600 --> 00:13:47.750
studying variations in X-ray intensity


00:13:47.760 --> 00:13:49.550
during the rise and fall of each


00:13:49.560 --> 00:13:51.990
eruption. They found that each impact


00:13:52.000 --> 00:13:53.910
resulted in roughly about a quarter


00:13:53.920 --> 00:13:55.829
Jupiter's worth of mass reaching


00:13:55.839 --> 00:13:58.389
expansion velocities around 15% the


00:13:58.399 --> 00:14:01.110
speed of light. And NISA was then able


00:14:01.120 --> 00:14:03.030
to measure the size and temperature of


00:14:03.040 --> 00:14:05.110
the roughly spherical bubble of debris


00:14:05.120 --> 00:14:06.949
as it expanded.


00:14:06.959 --> 00:14:10.389
This report from NASA TV.


00:14:10.399 --> 00:14:11.990
From its perch on the International


00:14:12.000 --> 00:14:14.470
Space Station, NASA's NICER X-ray


00:14:14.480 --> 00:14:16.949
telescope has helped map a mysterious


00:14:16.959 --> 00:14:19.910
cosmic event for the first time. It


00:14:19.920 --> 00:14:22.069
happened in a galaxy 300 million lighty


00:14:22.079 --> 00:14:25.470
years away. Astronomers call this system


00:14:25.480 --> 00:14:27.990
Ansky. Ansky produces a type of


00:14:28.000 --> 00:14:31.189
recurring X-ray outburst called a QPE or


00:14:31.199 --> 00:14:34.310
quasi periodic eruption. These events


00:14:34.320 --> 00:14:37.189
were just recently discovered. Ansky is


00:14:37.199 --> 00:14:39.509
only the eighth known QPE emitter and is


00:14:39.519 --> 00:14:42.230
the most energetic to date. Some


00:14:42.240 --> 00:14:44.710
scientists think QPEs occur when a lower


00:14:44.720 --> 00:14:47.269
mass object orbits a super massive black


00:14:47.279 --> 00:14:50.310
hole in the center of a galaxy. When the


00:14:50.320 --> 00:14:52.310
smaller object passes through the disc


00:14:52.320 --> 00:14:54.870
of gas around the monster black hole, it


00:14:54.880 --> 00:14:56.949
produces a cloud of debris that causes


00:14:56.959 --> 00:14:59.670
an X-ray outburst. The low mass object


00:14:59.680 --> 00:15:02.150
isn't on a circular orbit and its motion


00:15:02.160 --> 00:15:03.829
is affected by the distortion of


00:15:03.839 --> 00:15:05.910
spaceime near the black hole. So the


00:15:05.920 --> 00:15:07.670
eruptions don't repeat over the same


00:15:07.680 --> 00:15:09.509
exact time frame which is what makes


00:15:09.519 --> 00:15:12.870
them quasi periodic. Ansky's outbursts


00:15:12.880 --> 00:15:14.710
are the longest of all the QPEs


00:15:14.720 --> 00:15:16.949
astronomers have studied with eruptions


00:15:16.959 --> 00:15:19.590
every 4.5 days or so that last


00:15:19.600 --> 00:15:22.550
approximately 1 and 1/2 days. That may


00:15:22.560 --> 00:15:25.030
be caused by a larger disc engulfing an


00:15:25.040 --> 00:15:27.910
object farther away. Nicer's


00:15:27.920 --> 00:15:30.069
observations of Ansky allowed scientists


00:15:30.079 --> 00:15:32.150
to probe the gas ejected from the disc


00:15:32.160 --> 00:15:34.870
after each collision. The gas expands,


00:15:34.880 --> 00:15:37.829
reaching velocities about 15% the speed


00:15:37.839 --> 00:15:40.470
of light and produces the X-rays we see


00:15:40.480 --> 00:15:41.470
as


00:15:41.480 --> 00:15:44.710
QPEs. Nicer and other missions will


00:15:44.720 --> 00:15:47.670
continue to study Ansky and other QPEs,


00:15:47.680 --> 00:15:49.829
helping astronomers reveal their


00:15:49.839 --> 00:15:51.670
secrets.


00:15:51.680 --> 00:15:55.720
This spaceime


00:15:55.730 --> 00:16:02.840
[Music]




00:16:07.830 --> 00:16:09.430
[Applause]


00:16:09.440 --> 00:16:11.189
And time now to take another brief look


00:16:11.199 --> 00:16:12.710
at some of the other stories making news


00:16:12.720 --> 00:16:14.629
in science this week with a science


00:16:14.639 --> 00:16:16.870
report. A new study has shown that


00:16:16.880 --> 00:16:18.870
artificial intelligence chatbots driven


00:16:18.880 --> 00:16:20.790
by large language models tend to


00:16:20.800 --> 00:16:22.870
exaggerate the scope of research when


00:16:22.880 --> 00:16:26.069
summarizing scientific papers. A report


00:16:26.079 --> 00:16:28.069
in the journal of the Royal Society Open


00:16:28.079 --> 00:16:31.430
Science analyzed 4,900 chatbot generated


00:16:31.440 --> 00:16:33.990
summaries of scientific abstracts. These


00:16:34.000 --> 00:16:36.150
abstracts themselves are short summaries


00:16:36.160 --> 00:16:37.670
found at the start of a scientific


00:16:37.680 --> 00:16:39.829
paper. They found the artificial


00:16:39.839 --> 00:16:41.910
intelligence was five times more likely


00:16:41.920 --> 00:16:44.230
to overgeneralize findings than a human


00:16:44.240 --> 00:16:46.710
expert. Now, the authors didn't ask the


00:16:46.720 --> 00:16:48.550
chatbots to write the summaries for an


00:16:48.560 --> 00:16:50.550
expert audience, but they did request


00:16:50.560 --> 00:16:53.030
systematic details and faithful abstract


00:16:53.040 --> 00:16:55.590
summaries in their prompts. Ironically,


00:16:55.600 --> 00:16:57.430
prompting for accuracy tended to


00:16:57.440 --> 00:16:59.749
increase overgeneralizations, and newer,


00:16:59.759 --> 00:17:01.749
larger language models were far less


00:17:01.759 --> 00:17:04.230
accurate than the older ones. In other


00:17:04.240 --> 00:17:06.390
words, AI is getting better at


00:17:06.400 --> 00:17:08.429
exaggerating and


00:17:08.439 --> 00:17:10.949
lying. Engineers have invented a small


00:17:10.959 --> 00:17:13.270
neuromorphic device that detects hand


00:17:13.280 --> 00:17:15.829
movement, stores memories, and processes


00:17:15.839 --> 00:17:17.590
information very much like a human


00:17:17.600 --> 00:17:19.510
brain, but without the need for an


00:17:19.520 --> 00:17:21.829
external computer. A report in the


00:17:21.839 --> 00:17:23.750
journal Advanced Materials Technologies


00:17:23.760 --> 00:17:25.669
claims the innovation marks a strong


00:17:25.679 --> 00:17:27.829
step towards enabling instant visual


00:17:27.839 --> 00:17:29.909
processing in autonomous vehicles as


00:17:29.919 --> 00:17:31.990
well as advanced robotics and other next


00:17:32.000 --> 00:17:34.070
generation applications for improved


00:17:34.080 --> 00:17:36.789
human interactions. Neuromorphic vision


00:17:36.799 --> 00:17:38.310
systems are designed to use similar


00:17:38.320 --> 00:17:40.470
analog processing to our brains which


00:17:40.480 --> 00:17:42.230
can greatly reduce the amount of energy


00:17:42.240 --> 00:17:44.630
needed to perform complex visual tasks


00:17:44.640 --> 00:17:46.390
compared with the digital technologies


00:17:46.400 --> 00:17:49.190
being used today.


00:17:49.200 --> 00:17:51.029
Scientists have discovered the oldest


00:17:51.039 --> 00:17:53.510
ancestor for all living Australian tree


00:17:53.520 --> 00:17:55.590
frogs. A report in the journal


00:17:55.600 --> 00:17:57.510
vertebrate paleontology has shown that


00:17:57.520 --> 00:17:59.590
the newly identified species has


00:17:59.600 --> 00:18:01.909
distinct links with tree frogs found in


00:18:01.919 --> 00:18:04.150
South America. Now, previously


00:18:04.160 --> 00:18:05.830
scientists believed Australian and South


00:18:05.840 --> 00:18:07.750
American tree frogs separated from each


00:18:07.760 --> 00:18:10.470
other about 33 million years ago. But


00:18:10.480 --> 00:18:12.310
the new discovery shows the split


00:18:12.320 --> 00:18:14.710
actually happened much earlier about 55


00:18:14.720 --> 00:18:17.110
million years ago.


00:18:17.120 --> 00:18:18.870
And now for the silliest story of the


00:18:18.880 --> 00:18:21.990
week. A former CIA agent claims he was


00:18:22.000 --> 00:18:24.230
taught to use his psychic abilities to


00:18:24.240 --> 00:18:26.390
undertake a remote viewing of the red


00:18:26.400 --> 00:18:29.190
planet Mars in its ancient past. And he


00:18:29.200 --> 00:18:32.150
claims he saw human civilizations there


00:18:32.160 --> 00:18:34.070
that were aware they were destined to


00:18:34.080 --> 00:18:36.390
face extinction. The trouble is Tim


00:18:36.400 --> 00:18:38.070
Mendum from Australian Skeptics points


00:18:38.080 --> 00:18:39.750
out that while astronomers have mapped


00:18:39.760 --> 00:18:41.430
every inch of the Martian surface by


00:18:41.440 --> 00:18:43.430
satellite, they yet to find any evidence


00:18:43.440 --> 00:18:46.630
of ancient ruins. Even the famous face


00:18:46.640 --> 00:18:49.110
on Mars sphinx and nearby pyramid-shaped


00:18:49.120 --> 00:18:51.029
structures all turned out to be nothing


00:18:51.039 --> 00:18:52.950
more than the simple play of light and


00:18:52.960 --> 00:18:55.590
shade on natural rock formations. The


00:18:55.600 --> 00:18:58.230
CIA did real tests of psychics during


00:18:58.240 --> 00:19:01.350
the 70s 80s. This is the remote viewing


00:19:01.360 --> 00:19:03.270
stuff. Yeah, remote viewing, the power


00:19:03.280 --> 00:19:04.549
to influence something else like


00:19:04.559 --> 00:19:07.029
telekinesis, move things, various things


00:19:07.039 --> 00:19:09.029
as they would and if you're really a


00:19:09.039 --> 00:19:10.549
follower of the CI as they probably


00:19:10.559 --> 00:19:12.630
should be trying out any avenue they


00:19:12.640 --> 00:19:14.150
could find to see if there's something


00:19:14.160 --> 00:19:16.390
to an advantage to their site, right?


00:19:16.400 --> 00:19:18.150
And they looked at psychic powers for a


00:19:18.160 --> 00:19:19.430
number of years and then after a while


00:19:19.440 --> 00:19:21.750
said nothing worth looking at here, not


00:19:21.760 --> 00:19:23.270
even anything that's sort of half


00:19:23.280 --> 00:19:25.029
inkling that could be developed and said


00:19:25.039 --> 00:19:26.070
there's nothing there to look at. And


00:19:26.080 --> 00:19:27.430
they spent a lot of money for it and


00:19:27.440 --> 00:19:28.789
ever since then people said, "Well, the


00:19:28.799 --> 00:19:30.549
CIA looked at it. It must be true." No,


00:19:30.559 --> 00:19:31.909
they looked at it. They try everything.


00:19:31.919 --> 00:19:33.190
They tried looking at people who can


00:19:33.200 --> 00:19:35.029
knock goats over with that thought. They


00:19:35.039 --> 00:19:36.549
look at all sorts of strange things just


00:19:36.559 --> 00:19:38.230
in case one of them proved true. And in


00:19:38.240 --> 00:19:40.470
a way, this is proof that it doesn't not


00:19:40.480 --> 00:19:41.909
true because they stopped. And they


00:19:41.919 --> 00:19:43.110
handed over all the information about


00:19:43.120 --> 00:19:44.950
it. It's available. Paper of the CIA


00:19:44.960 --> 00:19:46.630
investigations of UFOs. They readily


00:19:46.640 --> 00:19:48.070
handed over the information. They made a


00:19:48.080 --> 00:19:49.990
movie about it. Several. So this was


00:19:50.000 --> 00:19:51.750
someone who was supposedly was one of


00:19:51.760 --> 00:19:54.150
the subjects being tested by the CIA.


00:19:54.160 --> 00:19:55.750
It's called Project Stargate was the


00:19:55.760 --> 00:19:56.950
actual program that was looking at


00:19:56.960 --> 00:19:58.630
remote viewing, which is seeing things


00:19:58.640 --> 00:20:00.310
from a distance. And this fellow claimed


00:20:00.320 --> 00:20:01.909
he could also see into the past and the


00:20:01.919 --> 00:20:03.830
future. He was described himself as


00:20:03.840 --> 00:20:05.750
remote viewer number one. Say, "Wow, he


00:20:05.760 --> 00:20:07.350
must have been the best or the first. We


00:20:07.360 --> 00:20:08.750
had high opinions of


00:20:08.760 --> 00:20:10.870
himself." And he reckon he was given


00:20:10.880 --> 00:20:12.870
coordinates of a spot on Mars and the


00:20:12.880 --> 00:20:15.430
and the notation 1 million years BC. and


00:20:15.440 --> 00:20:17.750
a location and he spotted buildings, a


00:20:17.760 --> 00:20:19.990
pyramid and he spotted humans, actual


00:20:20.000 --> 00:20:21.830
humans but very tall humans who are


00:20:21.840 --> 00:20:23.510
looking very sad and very miserable


00:20:23.520 --> 00:20:25.029
because they were just about to be wiped


00:20:25.039 --> 00:20:27.830
out by some planet that brush past Mars


00:20:27.840 --> 00:20:29.590
and stole the atmosphere from Mars which


00:20:29.600 --> 00:20:30.549
would have happened very quickly. I


00:20:30.559 --> 00:20:31.750
think they must have had some warning.


00:20:31.760 --> 00:20:33.669
So the the visions he saw were inside


00:20:33.679 --> 00:20:36.310
this pyramid looked very sparse and lot


00:20:36.320 --> 00:20:37.990
looking sad and then they gone. They


00:20:38.000 --> 00:20:39.830
said there was definitely life on Mars.


00:20:39.840 --> 00:20:41.750
It's human. Not even humanoid. It's


00:20:41.760 --> 00:20:43.909
human. Big, tall, twice the size of us


00:20:43.919 --> 00:20:45.750
living in giant pyramids. The CIA


00:20:45.760 --> 00:20:47.270
seriously looking at this trying to find


00:20:47.280 --> 00:20:49.190
examples evidence and they couldn't find


00:20:49.200 --> 00:20:51.270
any. Okay. Whether you believe the CIA


00:20:51.280 --> 00:20:53.350
or not, this guy claims he did find


00:20:53.360 --> 00:20:55.029
something. He told them, and of course,


00:20:55.039 --> 00:20:56.710
instantly the evidence was covered up.


00:20:56.720 --> 00:20:58.630
So, he's come back here 50 years later,


00:20:58.640 --> 00:21:00.630
talk about what he what he discovered


00:21:00.640 --> 00:21:02.470
then as remote viewer number one.


00:21:02.480 --> 00:21:04.149
There's no way to prove it. Obviously, 1


00:21:04.159 --> 00:21:06.470
million years BC is a very very strange


00:21:06.480 --> 00:21:08.789
figure to choose. seeing tall humanoids


00:21:08.799 --> 00:21:10.149
to science. You just saw the movie


00:21:10.159 --> 00:21:12.630
Avatar. Yeah, quite possibly. It's just


00:21:12.640 --> 00:21:15.029
all too 1950s science fiction sort of


00:21:15.039 --> 00:21:17.190
thing. As much as we all love 1950s


00:21:17.200 --> 00:21:19.350
science fiction, it's not necessarily an


00:21:19.360 --> 00:21:21.590
accurate depiction of the way things


00:21:21.600 --> 00:21:24.149
are. That's Tim Mindum from Australian


00:21:24.159 --> 00:21:26.620
Skeptics.


00:21:26.630 --> 00:21:40.310
[Music]


00:21:40.320 --> 00:21:43.110
And that's the show for now. Spacetime


00:21:43.120 --> 00:21:44.870
is available every Monday, Wednesday,


00:21:44.880 --> 00:21:47.230
and Friday through bites.com,


00:21:47.240 --> 00:21:49.430
Soundcloud, YouTube, your favorite


00:21:49.440 --> 00:21:51.669
podcast download provider, and from


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spacetime


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withstartgary.com. Spacetime's also


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broadcast through the National Science


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Foundation on Science Zone Radio and on


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both iHeart Radio and TuneIn Radio. And


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you can help to support our show by


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visiting the Spacetime store for a range


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of promotional merchandising goodies, or


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by becoming a Spacetime patron, which


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gives you access to triple episode


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commercial free versions of the show, as


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well as lots of bonus audio content,


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which doesn't go to air, access to our


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exclusive Facebook group, and other


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rewards. Just go to


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spaceimewithstgarry.com for full


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details. You've been listening to


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Spacetime with Stuart Garry. This has


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been another quality podcast production


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from byes.com.