James Webb’s First Light, Galactic Anomalies & Space Surprises: #486 - Holiday Special 6 | Space...
Space Nuts Episode 486: James Webb's First Image and Cosmic Mysteries Unveiled
Join Andrew Dunkley and Professor Fred Watson as they delve into the latest astronomical marvels in this exciting episode of Space Nuts. From the groundbreaking first image captured by the James Webb Space Telescope to intriguing listener questions about galaxy sizes and cosmic mysteries, this episode is packed with stellar insights.
Episode Highlights:
- James Webb's First Image: Discover the breathtaking first image from the James Webb Space Telescope, revealing a cluster of galaxies in stunning detail. Learn how this new tool surpasses the Hubble Telescope's capabilities and what it means for the future of space exploration.
- Galaxy Size Anomalies : Explore the fascinating question from Alex in New South Wales about why galaxies appear to change size at different distances. Fred Watson Watson explains the peculiar properties of our expanding universe that lead to this phenomenon.
- Dark Matter Discoveries: Anna from Astronomy Daily shares groundbreaking research into the GD1 Stellar Stream, suggesting a new understanding of dark matter involving self-interacting subhalos. Discover how this could revolutionise our knowledge of the universe's fundamental structure.
- China's Rocket Advancements : Learn about China's impressive technological strides with successful tests of multiple rocket engines in a single day. Understand how these developments could impact future lunar and Mars missions.
For more Space Nuts, including our continually updating newsfeed and to listen to all our episodes, visit our website. (https://www.spacenutspodcast.com/about)
Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.
00:00 - Andrew Dunkley welcomes Professor Fred Watson to Space Nuts
02:53 - The James Webb Space Telescope has released its first deep field image
10:32 - Fred and Andrew welcome Alex from Bellingen, New South Wales
11:00 - It's common understanding that distance reduces apparent size of galaxies
15:31 - Astronomers may have finally cracked a long standing cosmic mystery about GD1
17:57 - China conducted tests of five different rocket engines in a single day
✍️ Episode References
James Webb Space Telescope
Hubble Space Telescope
https://www.nasa.gov/mission_pages/hubble/main/index.html
SMACS 0723
https://en.wikipedia.org/wiki/SMACS_J0723.3%E2%80%937327
Abel clusters
https://ned.ipac.caltech.edu/level5/Abell/frames.html
Astronomy Daily
China Aerospace Science and Technology Corporation
http://www.spacechina.com/n25/n2014789/English/index.html
Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts--2631155/support (https://www.spreaker.com/podcast/space-nuts--2631155/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) .
Episode link: https://play.headliner.app/episode/25064166?utm_source=youtube
00:00 - Andrew Dunkley welcomes Professor Fred Watson to Space Nuts
02:53 - The James Webb Space Telescope has released its first deep field image
10:32 - Fred and Andrew welcome Alex from Bellingen, New South Wales
11:00 - It’s common understanding that distance reduces apparent size of galaxies
15:31 - Astronomers may have finally cracked a long standing cosmic mystery about GD1
17:57 - China conducted tests of five different rocket engines in a single day
Kind: captions
Language: en
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with Fred and I taking a little bit of a
00:00:02.760 --> 00:00:05.150
break we thought it'd be great to dig
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into the archives and see what sort of
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stories really captured the imaginations
00:00:09.719 --> 00:00:12.549
of people around the world things like
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opening up moon rocks 50 years after
00:00:14.839 --> 00:00:17.470
they were collected uh other things like
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the first photographs taken by James web
00:00:20.039 --> 00:00:23.589
or the first image of Sagittarius A star
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those are the kinds of things we've been
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talking about over the years so sit back
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relax and enjoy archival EP episodes of
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Space Nuts Space Nuts hi there thanks
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for joining us on another edition of
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Space Nuts my name is Andrew Dunley your
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host and today on the program we are
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going to be talking about the big news
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of the week probably the big news of the
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Year and that is the first image
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official image from the James web Space
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Telescope uh it's only been announced in
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the last hour or two since we started
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recording so uh it's fresh off the press
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or off the president's desk whichever
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way you want to look at it and Alex from
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New South Wales is apparently going to
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ask a question about the size of
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galaxies uh that's all to come on this
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edition of Space Nuts 15 seconds
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guidance is internal 10 9 ignition
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sequence start Space Nuts 5 4 3 2 1 2 3
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4 5 5 4 3 2 1 Space Nuts rep it feels
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good and joining us as always is
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Professor Fred what's an astronomer at
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large hello Fred how are you very well
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thanks very excited with all that's
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going on oh man it's just crazy town at
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the moment yeah it is the astronomy
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world is a Gog a Gog that's right that's
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not a word I get to use very
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often yeah go I like a Gog I think it's
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got a ring to
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it uh yeah that um we'll we'll get to
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that in a moment of course we have
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plenty to talk about and uh some
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audience questions as I as I
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mentioned uh and and you've got a studio
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guest Fred are you able to share this
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with our viewing audience if you're if
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you're watching us on YouTube You're get
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ready for a
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surprise let to let everybody know that
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he still exists there's muskat mus or
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family cat who normally doesn't uh come
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into the study here because it leaves
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copious quantities of hair wherever he
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goes but he's been asleep there in the
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chair all morning and all mostly
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afternoon so he's still here he's doing
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say much these days he's doing his hats
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proud because that's what cats do
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best
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yep it's good to have Muscat in the
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studio right let us get down to business
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and first on the agenda is this amazing
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image that has been delivered by the
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James web Space Telescope it's been a
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lot of anticipation about what the first
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image would be a lot of anticipation
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about how far reaching the James web
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Space Telescope will be in um its
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capacity to provide Deep Field imagery
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from far far back in the uh universe and
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it has not disappointed Fred not at all
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that's right so um what what we're
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seeing and and I would guess most of our
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listeners will have seen this because I
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think it's going to be the cover picture
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on the on the podcast for today see uh
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really is a beautiful image of a cluster
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of galaxies uh which as always has a
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gobble de name it is smacs
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0723 um uh
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smac stands for streaming motions in
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Abel clusters okay uh and and Abel
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clusters are clusters that were
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cataloged by George Abel who I knew when
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he worked in Edinburgh for a while uh so
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cluster is a cluster of galaxies um but
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of course like so many of these giant
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clusters its mass acts as a
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gravitational lens uh magnifying and
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distorting the images of galaxies in the
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far distance behind it um and so this
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particular cluster um shows up uh
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beautifully in you know the the kind of
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colors that you would expect so as you
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know the James web telescope is an
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infrared telescope excuse me so uh it
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can look at the image in various
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infrared wave bands and what you can do
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is sort of equate those to visible light
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wave bands so that things uh that uh are
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in the far infrared show up as red in
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the visible uh things that are you know
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in the mid infrared show up as as as
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white things that are in the near
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infrared in other words not much reder
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than red they'll show up probably as
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blue I'm not quite sure how they did the
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color balancing in this image but
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they've got it absolutely right because
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the nearby stars are blue um the
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relatively nearby cluster of galaxies is
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white and the distant ones as you might
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expect it because they're highly red
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shifted they look orange in color um and
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again distorted so we're looking back
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here um you know uh it will be well the
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the nearby cluster is 4.6 billion light
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years away uh the one Beyond it could be
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double that um I haven't seen the
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results of that but it's it's a long way
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off uh and what I think is most telling
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about this image so this is um being
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called web's first Deep Field image um
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and you probably remember because we've
00:05:46.800 --> 00:05:48.950
talked about it before the Hubble
00:05:48.960 --> 00:05:50.830
telescope produced a number of Deep
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Field images deep being how how far into
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the universe you're looking how far into
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the past you're looking um and there was
00:05:58.919 --> 00:06:02.189
the the the Deep Field the Hubble I
00:06:02.199 --> 00:06:04.189
can't remember what the the ultra Deep
00:06:04.199 --> 00:06:05.510
Field I think was the last one there
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were a number in between as well um but
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they took weeks of time on the Hubble
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Space Telescope to build up the imagery
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I remember the first one they they chose
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the part of Sky because there was
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nothing visible in it and so then they
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they observed it for for several nights
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or several days um because it doesn't
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matter in a Space Telescope um and
00:06:29.120 --> 00:06:32.070
finally got these deep Fields so but it
00:06:32.080 --> 00:06:35.749
took up to weeks to get them the James
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web first Deep Field was obtained in 12
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hours so that's telling you uh that you
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know we we now have a tool that can beat
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the pants off the Hubble Space Telescope
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and that is no small achievement and of
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course that comes about because it's a
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much bigger telescope uh the Hubble Is
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2.3 meter telescope uh this is a 6.5
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meter
00:07:05.400 --> 00:07:08.309
telescope yeah it's uh and and and
00:07:08.319 --> 00:07:11.350
that's really part of the reason why
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people have become so um excited in
00:07:14.440 --> 00:07:16.589
anticipation of what it is capable of
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and it's uh it's already showing its
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true colors buom uh you know the part
00:07:22.360 --> 00:07:24.230
that really blew my mind when I looked
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at the image and read the description
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from NASA I'm sure you'll know what I'm
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talking about here uh Master says this
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image covers a patch of Sky
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approximately the size of a grain of
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sand held at arms length by someone on
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the ground that's right and reveals
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thousands of galaxies in a tiny sliver
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of vast
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space it I know we always talk about the
00:07:47.400 --> 00:07:49.830
vastness of the universe but here we are
00:07:49.840 --> 00:07:52.230
looking at a distance of maybe 4 to 8
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billion light years and we're looking at
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something that uh only takes up space
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the size of the grain of sand held it
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arms length I mean my word it just it it
00:08:05.440 --> 00:08:08.469
is or inspiring it really is yeah it
00:08:08.479 --> 00:08:10.230
blew the president away as well I don't
00:08:10.240 --> 00:08:12.749
know whether you saw the uh the NASA
00:08:12.759 --> 00:08:14.469
broadcast when this was released but
00:08:14.479 --> 00:08:17.230
President Biden uh you could tell he was
00:08:17.240 --> 00:08:19.629
absolutely captivated by all this it's
00:08:19.639 --> 00:08:24.070
fantastic to see uh such enthusiasm um
00:08:24.080 --> 00:08:26.189
and of course Andrew this is only the
00:08:26.199 --> 00:08:29.869
first of many by the time uh our listen
00:08:29.879 --> 00:08:32.230
are watching and listening to this if
00:08:32.240 --> 00:08:35.709
they watch on YouTube uh we expect uh
00:08:35.719 --> 00:08:38.509
another tranch of images to have been
00:08:38.519 --> 00:08:42.029
released um the kinds of things that
00:08:42.039 --> 00:08:43.589
we're expecting to see in fact I think
00:08:43.599 --> 00:08:46.550
we've got a fairly um a fairly good list
00:08:46.560 --> 00:08:49.310
here uh we'll see wasp
00:08:49.320 --> 00:08:52.590
96b now that is a planet that's an extra
00:08:52.600 --> 00:08:55.430
Solar Planet wasp 96b so it's going to
00:08:55.440 --> 00:08:58.030
be really interesting to see uh how that
00:08:58.040 --> 00:09:00.030
shows up we're going to see the southern
00:09:00.040 --> 00:09:02.590
Ring Nebula uh that's a planetary nebula
00:09:02.600 --> 00:09:04.710
we'll see no doubt a lot of detail in
00:09:04.720 --> 00:09:06.509
that we're going to see a cluster of
00:09:06.519 --> 00:09:09.470
galaxies a very compact uh cluster of
00:09:09.480 --> 00:09:11.870
galaxies called Stefan's quintet very
00:09:11.880 --> 00:09:14.910
well-known very beloved of Galactic uh
00:09:14.920 --> 00:09:16.310
astronomers or extra Galactic
00:09:16.320 --> 00:09:18.069
astronomers people who study the The
00:09:18.079 --> 00:09:20.110
Wider Universe these galaxies are
00:09:20.120 --> 00:09:21.670
physically close together and all
00:09:21.680 --> 00:09:23.829
interacting with one another and of
00:09:23.839 --> 00:09:26.350
course uh an object in our deep southern
00:09:26.360 --> 00:09:28.430
Sky the Karina nebula the EA Karina
00:09:28.440 --> 00:09:31.150
nebula one of the most active regions uh
00:09:31.160 --> 00:09:33.790
of space in our local neighborhood so it
00:09:33.800 --> 00:09:35.230
be really interesting to see what's
00:09:35.240 --> 00:09:38.269
going on in that too yes yes and and who
00:09:38.279 --> 00:09:41.630
knows we we might actually be focusing
00:09:41.640 --> 00:09:44.870
our cameras on alien civilizations out
00:09:44.880 --> 00:09:46.509
there somewhere and we don't even know
00:09:46.519 --> 00:09:48.829
it we don't that Dove Tales beautifully
00:09:48.839 --> 00:09:52.870
into our next story so all I'll say just
00:09:52.880 --> 00:09:54.670
to finish up with the James wor Space
00:09:54.680 --> 00:09:57.470
Telescope is watch this space as we as
00:09:57.480 --> 00:09:59.470
we've said uh because there's some
00:09:59.480 --> 00:10:02.790
exciting things to come it's uh really I
00:10:02.800 --> 00:10:04.350
I think it's fantastic that they've done
00:10:04.360 --> 00:10:06.470
so well that it got in place yes it's
00:10:06.480 --> 00:10:07.710
had a couple of problems that they've
00:10:07.720 --> 00:10:10.470
managed to overcome without any adverse
00:10:10.480 --> 00:10:13.670
effect and now it's ready to do its job
00:10:13.680 --> 00:10:15.670
and uh yeah who knows what we're going
00:10:15.680 --> 00:10:18.990
to learn Fred who knows absolutely
00:10:19.000 --> 00:10:21.990
fabulous stuff you're listening to and
00:10:22.000 --> 00:10:24.190
in some places watching Space Nuts with
00:10:24.200 --> 00:10:29.949
Andrew Dunley and Professor Fred Watson
00:10:29.959 --> 00:10:32.870
and I feel fine Space Nuts uh now we'll
00:10:32.880 --> 00:10:37.069
go to uh Alex who's from a lovely uh
00:10:37.079 --> 00:10:38.990
it's it's actually a sorted nasty
00:10:39.000 --> 00:10:42.110
horrible little place called bellingen
00:10:42.120 --> 00:10:45.430
and you said come on in New South Wales
00:10:45.440 --> 00:10:47.269
it's actually a a glorious part of the
00:10:47.279 --> 00:10:50.829
world it's still yeah yeah Alex is
00:10:50.839 --> 00:10:52.509
asking about galaxies this is really
00:10:52.519 --> 00:10:55.350
good too hi Fred and Andrew it's Alex
00:10:55.360 --> 00:10:57.550
from bellingen congratulations on your
00:10:57.560 --> 00:11:00.910
300 shows May the be many more okay
00:11:00.920 --> 00:11:03.269
straight into my question it's about the
00:11:03.279 --> 00:11:06.550
apparent size of galaxies it's common
00:11:06.560 --> 00:11:07.949
understanding that the further away an
00:11:07.959 --> 00:11:10.030
object is the smaller it appears to our
00:11:10.040 --> 00:11:12.670
eyes I guess you could say the object's
00:11:12.680 --> 00:11:15.710
angular size reduces with distance just
00:11:15.720 --> 00:11:17.710
look down a long straight road lined
00:11:17.720 --> 00:11:20.310
with power poles and the poles appear
00:11:20.320 --> 00:11:22.870
smaller the further away they are but
00:11:22.880 --> 00:11:24.629
I've heard this seemingly obvious
00:11:24.639 --> 00:11:26.590
relationship between distance and
00:11:26.600 --> 00:11:30.190
apparent size does not apply to Galaxy
00:11:30.200 --> 00:11:32.389
well it does to a point but at some
00:11:32.399 --> 00:11:34.590
distance away from us the apparent size
00:11:34.600 --> 00:11:37.350
of galaxies stops getting smaller and
00:11:37.360 --> 00:11:39.710
then begins to increase the further from
00:11:39.720 --> 00:11:42.750
us they are have I heard that right and
00:11:42.760 --> 00:11:45.750
if so how the heck does that work thanks
00:11:45.760 --> 00:11:47.430
and keep up the good work it's all the
00:11:47.440 --> 00:11:50.509
best oh boy you tell us Alex um that
00:11:50.519 --> 00:11:53.670
sounds bizarre Fred it does doesn't it
00:11:53.680 --> 00:11:56.430
it's an extraordinary thing but it is
00:11:56.440 --> 00:12:00.190
actually true um and
00:12:00.200 --> 00:12:02.829
it's it's a real
00:12:02.839 --> 00:12:07.389
illustration of the fact that um we live
00:12:07.399 --> 00:12:11.470
in a universe that has peculiar
00:12:11.480 --> 00:12:16.389
properties uh and it's basically uh the
00:12:16.399 --> 00:12:18.269
fact that we live in an expanding
00:12:18.279 --> 00:12:20.750
universe that causes this phenomenon to
00:12:20.760 --> 00:12:24.509
happen uh because uh if you go through
00:12:24.519 --> 00:12:26.590
the mathematics and actually there's
00:12:26.600 --> 00:12:27.829
There Are Places on the web where you
00:12:27.839 --> 00:12:29.829
can find some nice diagrams that show
00:12:29.839 --> 00:12:33.430
how this works uh the the further away
00:12:33.440 --> 00:12:36.790
you look um you get to a certain point
00:12:36.800 --> 00:12:38.629
Beyond which things don't look any
00:12:38.639 --> 00:12:42.750
smaller uh because uh you're you because
00:12:42.760 --> 00:12:45.430
the universe is expanding that's the the
00:12:45.440 --> 00:12:48.829
best way to put it um
00:12:48.839 --> 00:12:53.069
so so if you imagine
00:12:53.079 --> 00:12:55.670
um think about you know our and
00:12:55.680 --> 00:12:58.550
Andromeda galaxy our nearest neighbor
00:12:58.560 --> 00:13:01.870
which is alog together something like 2°
00:13:01.880 --> 00:13:05.030
on the sky uh at its distance of about 2
00:13:05.040 --> 00:13:08.949
and a half million light years away so
00:13:08.959 --> 00:13:12.030
if you started uh you we we envisage
00:13:12.040 --> 00:13:13.949
Andromeda we know what it's like we've
00:13:13.959 --> 00:13:16.590
all seen pictures of the androma Galaxy
00:13:16.600 --> 00:13:19.629
uh beautiful uh elongated spiral because
00:13:19.639 --> 00:13:22.790
it's tilted over towards us um 2 and a
00:13:22.800 --> 00:13:25.990
half million light years away if you
00:13:26.000 --> 00:13:28.150
took that Galaxy further and further
00:13:28.160 --> 00:13:29.710
away of course
00:13:29.720 --> 00:13:31.990
it would start looking smaller and
00:13:32.000 --> 00:13:33.550
smaller because it's getting further
00:13:33.560 --> 00:13:36.269
away the laws of physics work pretty
00:13:36.279 --> 00:13:39.389
normally over small distances but once
00:13:39.399 --> 00:13:45.990
she gets to uh a distance which is uh
00:13:46.000 --> 00:13:49.470
actually it it's the distance varies
00:13:49.480 --> 00:13:51.629
because you it depends on your model of
00:13:51.639 --> 00:13:54.389
the universe uh but I can give you the
00:13:54.399 --> 00:13:56.230
technical answer it's at a red shift of
00:13:56.240 --> 00:13:57.230
about
00:13:57.240 --> 00:14:00.350
1.5 uh and that's sort of a distance
00:14:00.360 --> 00:14:02.350
that's measured in billions of light
00:14:02.360 --> 00:14:03.509
years we probably talking about
00:14:03.519 --> 00:14:05.430
something like eight or nine billion
00:14:05.440 --> 00:14:07.430
light years once it gets to that
00:14:07.440 --> 00:14:10.629
distance it hits a minimum size which is
00:14:10.639 --> 00:14:12.990
about a thousandth of a degree remember
00:14:13.000 --> 00:14:15.509
it's it's two degrees at its present
00:14:15.519 --> 00:14:17.230
distance but it gets down to this
00:14:17.240 --> 00:14:21.230
1,000th of a degree Mark and and even
00:14:21.240 --> 00:14:23.110
though then you know keep on moving it
00:14:23.120 --> 00:14:26.189
away it doesn't actually get any smaller
00:14:26.199 --> 00:14:28.150
in fact it starts getting a bit bigger
00:14:28.160 --> 00:14:30.710
and that is totally bizarre but it's
00:14:30.720 --> 00:14:33.269
just about the way light behaves in an
00:14:33.279 --> 00:14:34.430
expanding
00:14:34.440 --> 00:14:37.430
Universe wow and and is this something
00:14:37.440 --> 00:14:39.990
that would be able to be demonstrated by
00:14:40.000 --> 00:14:42.749
the James web space exactly so I think
00:14:42.759 --> 00:14:45.470
we'll see you know we'll see physical
00:14:45.480 --> 00:14:47.310
proof of this happening with the gen's
00:14:47.320 --> 00:14:49.509
web Space Telescope when they they find
00:14:49.519 --> 00:14:51.350
that there are galaxies that don't seem
00:14:51.360 --> 00:14:53.069
to get any smaller even though you
00:14:53.079 --> 00:14:55.350
looking at them further and further away
00:14:55.360 --> 00:14:56.389
quite
00:14:56.399 --> 00:14:59.590
incredible that's um the same effect
00:14:59.600 --> 00:15:01.550
I have when I hit a golf ball it doesn't
00:15:01.560 --> 00:15:04.509
get smaller or smaller it stays about
00:15:04.519 --> 00:15:08.189
the same size yes suggests I'm not
00:15:08.199 --> 00:15:10.110
really hitting it very far at
00:15:10.120 --> 00:15:13.590
all never mind if you hit it it start
00:15:13.600 --> 00:15:14.629
getting
00:15:14.639 --> 00:15:18.670
bigger it's coming back to you yes
00:15:18.680 --> 00:15:20.870
absolutely uh thanks Alex and hope all
00:15:20.880 --> 00:15:22.670
is well in Belling I know you've been
00:15:22.680 --> 00:15:25.389
getting rained upon by cats and dogs and
00:15:25.399 --> 00:15:27.110
camels and who knows what else in recent
00:15:27.120 --> 00:15:28.670
times so hopefully it'll start to dry
00:15:28.680 --> 00:15:29.340
out
00:15:29.350 --> 00:15:31.110
[Music]
00:15:31.120 --> 00:15:34.350
soon Space Nuts hello again space
00:15:34.360 --> 00:15:36.350
Nutters this is Anna from astronomy
00:15:36.360 --> 00:15:38.590
daily the podcast stopping by again with
00:15:38.600 --> 00:15:40.230
a couple of the important stories we've
00:15:40.240 --> 00:15:42.790
been following over the past week
00:15:42.800 --> 00:15:44.430
astronomers may have finally cracked a
00:15:44.440 --> 00:15:46.509
longstanding cosmic mystery about one of
00:15:46.519 --> 00:15:49.030
our Galaxy's most intriguing features
00:15:49.040 --> 00:15:52.350
the gd1 Stellar stream this ribbon-like
00:15:52.360 --> 00:15:54.150
structure of stars which stretches
00:15:54.160 --> 00:15:56.590
across our Galaxy's Halo has puzzled
00:15:56.600 --> 00:15:58.550
scientists for years due to its unusual
00:15:58.560 --> 00:16:00.990
pattern of gaps and Spurs that seem to
00:16:01.000 --> 00:16:02.590
defy conventional
00:16:02.600 --> 00:16:04.870
explanations a team led by researchers
00:16:04.880 --> 00:16:06.309
at the University of California
00:16:06.319 --> 00:16:08.470
Riverside has proposed an exciting
00:16:08.480 --> 00:16:10.710
solution involving dark matter but not
00:16:10.720 --> 00:16:12.910
just any dark matter their research
00:16:12.920 --> 00:16:14.949
suggests these distinctive features were
00:16:14.959 --> 00:16:16.590
created by what's called a
00:16:16.600 --> 00:16:19.509
self-interacting dark matter sub Halo a
00:16:19.519 --> 00:16:21.389
dense concentration of dark matter that
00:16:21.399 --> 00:16:23.470
behaves differently than the traditional
00:16:23.480 --> 00:16:25.230
cold Dark Matter model we're familiar
00:16:25.240 --> 00:16:27.430
with what makes this discovery
00:16:27.440 --> 00:16:29.710
particularly fascinating is that the
00:16:29.720 --> 00:16:31.990
density needed to create these unusual
00:16:32.000 --> 00:16:35.350
patterns in gd1 is much higher than what
00:16:35.360 --> 00:16:37.150
we'd expect from conventional Dark
00:16:37.160 --> 00:16:39.509
Matter theories the research team found
00:16:39.519 --> 00:16:41.430
that only a collapsing subh of
00:16:41.440 --> 00:16:43.550
self-interacting Dark Matter could
00:16:43.560 --> 00:16:45.790
achieve the necessary density to produce
00:16:45.800 --> 00:16:48.629
these distinctive features we observe
00:16:48.639 --> 00:16:50.269
this isn't just about solving one
00:16:50.279 --> 00:16:52.990
mysterious structure in our galaxy if
00:16:53.000 --> 00:16:54.550
confirmed these findings could
00:16:54.560 --> 00:16:56.269
fundamentally change our understanding
00:16:56.279 --> 00:16:59.189
of Dark Matter itself remember Dark
00:16:59.199 --> 00:17:01.949
Matter makes up about 85% of all matter
00:17:01.959 --> 00:17:04.029
in the universe yet we still know
00:17:04.039 --> 00:17:06.710
remarkably little about its true nature
00:17:06.720 --> 00:17:08.710
This research suggests that dark matter
00:17:08.720 --> 00:17:10.429
particles might interact with each other
00:17:10.439 --> 00:17:12.870
through a new kind of force rather than
00:17:12.880 --> 00:17:14.590
being completely invisible to one
00:17:14.600 --> 00:17:17.270
another as previously thought the team
00:17:17.280 --> 00:17:19.270
used sophisticated computer simulations
00:17:19.280 --> 00:17:21.270
to model how this self-interacting dark
00:17:21.280 --> 00:17:23.390
matter would behave and the results
00:17:23.400 --> 00:17:25.110
matched perfectly with the observed
00:17:25.120 --> 00:17:28.189
features in the gd1 Stream it's like
00:17:28.199 --> 00:17:30.029
finding the piece of a puzzle that's
00:17:30.039 --> 00:17:32.190
been sitting on the table for years
00:17:32.200 --> 00:17:34.110
suddenly revealing a whole new picture
00:17:34.120 --> 00:17:36.909
of how our galaxy Works what's
00:17:36.919 --> 00:17:38.390
particularly exciting about this
00:17:38.400 --> 00:17:40.789
discovery is that it opens up new ways
00:17:40.799 --> 00:17:43.549
to study dark matter by looking at
00:17:43.559 --> 00:17:45.870
Stellar streams like gd1 we might be
00:17:45.880 --> 00:17:47.789
able to better understand not just where
00:17:47.799 --> 00:17:50.190
dark matter is but how it behaves and
00:17:50.200 --> 00:17:52.669
interacts with itself something that
00:17:52.679 --> 00:17:54.590
could revolutionize our understanding of
00:17:54.600 --> 00:17:56.990
the universe's fundamental
00:17:57.000 --> 00:17:59.669
structure next a little mystery from
00:17:59.679 --> 00:18:01.750
China that has set the space Community
00:18:01.760 --> 00:18:04.070
buzzing in a remarkable display of
00:18:04.080 --> 00:18:06.270
technological advancement China's space
00:18:06.280 --> 00:18:08.350
program has taken a significant Leap
00:18:08.360 --> 00:18:10.669
Forward conducting tests of five
00:18:10.679 --> 00:18:12.710
different rocket engines all in a single
00:18:12.720 --> 00:18:14.909
day the China Aerospace Science and
00:18:14.919 --> 00:18:17.390
Technology Corporation or Cass C carried
00:18:17.400 --> 00:18:18.990
out these tests at two separate
00:18:19.000 --> 00:18:21.470
locations Beijing and lwan county in
00:18:21.480 --> 00:18:24.390
heay Province one of the most notable
00:18:24.400 --> 00:18:26.630
tests involved a new hydrogen oxygen
00:18:26.640 --> 00:18:29.350
engine designed for upper stage Rockets
00:18:29.360 --> 00:18:31.630
during its 100 second test firing
00:18:31.640 --> 00:18:33.470
Engineers gathered crucial performance
00:18:33.480 --> 00:18:35.430
data that could pave the way for future
00:18:35.440 --> 00:18:37.750
missions this wasn't just any routine
00:18:37.760 --> 00:18:40.430
test it's believed to be connected to
00:18:40.440 --> 00:18:42.350
China's ambitious plans for crude lunar
00:18:42.360 --> 00:18:44.590
missions specifically their Long March
00:18:44.600 --> 00:18:47.070
10th launcher program but that's not all
00:18:47.080 --> 00:18:49.789
that was tested that day in Beijing
00:18:49.799 --> 00:18:51.630
Engineers put three different engines
00:18:51.640 --> 00:18:54.270
through their Paces a main engine an
00:18:54.280 --> 00:18:56.470
upper stage engine and a reaction and
00:18:56.480 --> 00:18:58.750
Orbit Control engine while spefic
00:18:58.760 --> 00:19:00.310
specific details about which Rockets
00:19:00.320 --> 00:19:02.430
these engines are destined for remain
00:19:02.440 --> 00:19:04.630
Under Wraps it's clear that China is
00:19:04.640 --> 00:19:07.549
developing multiple launch capabilities
00:19:07.559 --> 00:19:10.230
simultaneously perhaps most intriguingly
00:19:10.240 --> 00:19:12.190
the testing day included a methane
00:19:12.200 --> 00:19:14.750
liquid oxygen engine at the lwan
00:19:14.760 --> 00:19:17.149
facility this type of engine represents
00:19:17.159 --> 00:19:19.390
The Cutting Edge of Rocket technology
00:19:19.400 --> 00:19:21.110
with several Chinese companies already
00:19:21.120 --> 00:19:23.630
developing similar systems it's worth
00:19:23.640 --> 00:19:25.310
noting that Cassie is working on a
00:19:25.320 --> 00:19:27.669
particularly powerful version for their
00:19:27.679 --> 00:19:30.789
Long March 9th Mega rocket project these
00:19:30.799 --> 00:19:32.669
tests signal China's commitment to
00:19:32.679 --> 00:19:34.630
developing a diverse range of Rocket
00:19:34.640 --> 00:19:37.149
Technologies from deep space exploration
00:19:37.159 --> 00:19:39.870
vehicles to heavy lift Rockets according
00:19:39.880 --> 00:19:41.710
to KSC Engineers this is just the
00:19:41.720 --> 00:19:43.590
beginning they're planning to conduct
00:19:43.600 --> 00:19:45.190
even more research and testing of
00:19:45.200 --> 00:19:47.110
various engine types for China's major
00:19:47.120 --> 00:19:49.390
space projects suggesting we might see
00:19:49.400 --> 00:19:51.430
several new Chinese Rockets debut in the
00:19:51.440 --> 00:19:54.230
coming year this coordinated testing
00:19:54.240 --> 00:19:56.029
effort demonstrates China's growing
00:19:56.039 --> 00:19:58.350
capabilities in space technology and
00:19:58.360 --> 00:20:00.110
their determination to become a major
00:20:00.120 --> 00:20:02.870
player in space exploration with these
00:20:02.880 --> 00:20:04.430
successful tests they're laying the
00:20:04.440 --> 00:20:06.510
groundwork for increasingly ambitious
00:20:06.520 --> 00:20:09.029
missions from lunar exploration to
00:20:09.039 --> 00:20:11.669
potential Mars voyages and that's it
00:20:11.679 --> 00:20:14.070
from me for this episode of Space Nuts
00:20:14.080 --> 00:20:16.470
I'm Anna don't forget to visit astronomy
00:20:16.480 --> 00:20:18.990
daily. for your daily fix of space and
00:20:19.000 --> 00:20:21.470
astronomy news updates we're constantly
00:20:21.480 --> 00:20:23.190
updating the site with the latest
00:20:23.200 --> 00:20:25.190
discoveries Mission updates and Cosmic
00:20:25.200 --> 00:20:27.390
wonders until our next adventure through
00:20:27.400 --> 00:20:29.669
the cosmos keep looking up and stay
00:20:29.679 --> 00:20:30.990
curious about the Mysteries that
00:20:31.000 --> 00:20:33.830
surround us in space Space Nuts you'll
00:20:33.840 --> 00:20:36.950
be listening to the Space Nuts
00:20:36.960 --> 00:20:40.029
podcast available at Apple podcasts
00:20:40.039 --> 00:20:42.990
Spotify iHeart radio or your favorite
00:20:43.000 --> 00:20:45.270
podcast player you can also stream on
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demand at bites.com this has been
00:20:48.000 --> 00:20:50.390
another quality podcast production from
00:20:50.400 --> 00:20:53.200
bites.com