![[Q&A] Shrinking Sgr A*, Prime Directive for Mars, Dark Energy Detectors](https://is1-ssl.mzstatic.com/image/thumb/Podcasts122/v4/3d/2a/9e/3d2a9e4d-6e77-d8bd-01de-be8d2278a967/mza_6335075469144466696.jpg/250x250bb.jpg)
Episodes
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How fast can the Earth spin before it starts tearing itself apart? Should we be worried about samples from Mars contaminating Earth? Why don't space agencies use standardized platforms for their missions to save costs?
00:00 Start
01:05 How fast can the Earth spin not to tear apart?
05:19 Is bringing samples from space objects dangerous?
09:56 Can we make space probes standard?
14:34 Why is it so hard to go to other star systems?
19:01 What happens to time dilation in an Alcubierre drive?
21:32 Can our Oort cloud exchange material with Alpha Cen?
24:05 How would true colour images of exoplanets look like?
26:19 Are goofy thumbnails the zeitgeist of science channels?
29:41 Electromagnetic mass drivers on the Moon?
33:31 How long can satellites stay in orbit?
36:09 Why we don't expect life around M dwarf stars?
πΊ VIDEO VERSION
https://youtu.be/uibgztL2wEA
π° GUIDE TO SPACE Newsletter
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Another Starship flight is right around the corner, how to make space telescopes insanely thin, a black hole feeding faster than it should, and plans to build your own radio telescope
π¦ Support us on Patreon:
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00:00 Intro
00:13 Starship IFT-6 Launch Date
03:27 Satellite surviving a collision
05:12 Ultra-thin space telescopes
07:42 Aftermath of a neutron star collision
09:48 Steam world
11:25 Vote results
11:58 Black hole that's eating too fast
13:33 The end for Skylon?
15:39 Build your own telescope
17:16 Guide to Space
17:59 Questions for the interviews
πΊ VIDEO VERSION
https://youtu.be/yNGAB7i8prI
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Missing episodes?
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00:00 Start
00:27 [Alaris] How loud was the Big Bang?
04:06 [Ardena] Can black holes become neutron stars again?
07:35 [Asuria] Why send missions to Europa, not Enceladus?
12:17 [Belote] Will humans feel weird on a planet spinning opposite to Earth?
13:33 [Belsa] Did we see globular clusters gain or lose stars?
15:40 [Cartego] What would a Moon or Mars cars look like?
19:03 [Chulak] Can Ganymede and Titan be considered planets?
21:51 [Dakara] How loud would the Sun be?
22:40 [Edora] Can we use lasers for solar sails?
27:30 [Goronak] How does mass cross the event horizon?
30:28 [Hadante] How do we predict the lifetime of stars?
33:45 [Hebridan] Could we send mass to space to change our orbit and stop global warming?
πΊ VIDEO VERSION
https://youtu.be/eHKXwlDhWxA
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Is this Event Horizon image accurate? Webb scans Vega for planets, another problem with Voyager 1, and a supernova space dandelion.
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00:00 Intro
00:13 Retake for the Sgr A image?
https://www.universetoday.com/169025/the-milky-ways-supermassive-black-hole-photo-might-need-a-retake/
02:32 Scanning Vega for planets
https://www.universetoday.com/169041/webb-scans-vega-for-planets/
04:20 "Alien signal" decoded
https://www.universetoday.com/169047/remember-that-alien-signal-sent-by-the-exomars-orbiter-last-year-its-just-been-decoded/
06:00 NASA's solar sail damaged
https://futurism.com/the-byte/nasa-solar-sail-spacecraft-damaged-spinning
07:47 New problems for Voyager-1
https://blogs.nasa.gov/voyager/2024/10/28/after-pause-nasas-voyager-1-communicating-with-mission-team/
09:48 Vote results
10:28 Sub-surface ocean on Miranda
https://www.universetoday.com/169058/theres-another-ocean-moon-candidate-uranus-tiny-moon-miranda/
12:23 Titan's icy crust
https://www.universetoday.com/169048/titan-may-have-a-methane-crust-10-km-thick/
14:08 Space Dandelion
https://www.universetoday.com/169031/this-ancient-supernova-remnant-looks-like-a-stellar-dandelion/
16:04 The Guide to Space
16:45 Remote telescope testing
πΊ VIDEO VERSION
https://youtu.be/QbleoKUuwAg
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How hard can it be to retrieve a sample from Europa? How strong are the winds on Titan? What are the differences between different types of time dilation? Will Starship have landing legs? Answering all these questions and more in this week's Q&A show.
π¦ Support us on Patreon:
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00:00 Start
00:29 [Alaris] What are the weird rocket noises?
04:54 [Ardena] Could we be forever trapped on Earth because of its spin?
08:29 [Asuria] How to take pictures of auroras?
11:54 [Belote] How big is the Solar System?
15:16 [Cartego] How hard would it be to do a sample return from Europa?
21:37 [Chulak] Why worry about contaminating space probes?
25:25 [Dakara] What are the plans to explore lava tubes on Moon/Mars?
28:36 [Edora] How strong are the winds on Titan?
30:32 [Goronak] Will there be legs of Starships that go to Moon and Mars?
31:51 [Hadante] What are the chances of Europa Clipper finding plumes and sampling them?
34:20 [Hebridan] Any news on Starshot?
πΊ VIDEO VERSION
https://youtu.be/K344oQzUWVU
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What comes after the International Space Station, first results from Euclid, there’s hope for the TRAPPIST-1 planets, and a triple star system with a black hole.
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00:00 Intro
00:14 Vast Heaven-2
https://www.vastspace.com/haven-2
03:38 First results from Euclid
https://www.universetoday.com/168912/check-out-this-sneak-peek-of-the-euclid-missions-cosmic-atlas/
05:49 Laser communication
https://www.universetoday.com/168954/nasa-achieves-impressive-bandwidth-with-its-new-laser-communications-system/
08:28 Mirrors for LISA
https://www.universetoday.com/168976/nasa-is-building-telescopes-for-the-lisa-mission/
09:46 Hope for TRAPPIST-1
https://www.washington.edu/news/2024/10/23/rocky-planets-orbiting-small-stars-could-have-stable-atmospheres-needed-to-support-life/
11:25 Triple system with a black hole
https://www.caltech.edu/about/news/first-black-hole-in-a-triple-star-system-found
13:10 Vote results
14:23 Particle accelerator at the center of the Milky Way
https://www.universetoday.com/168982/theres-a-particle-accelerator-at-the-center-of-the-milky-way/
16:43 Heat shields for different atmospheres
https://www.universetoday.com/168977/testing-heat-shields-for-different-atmospheres/
19:03 Guide to space
19:36 Return of Virtual Star Parties
πΊ VIDEO VERSION
https://youtu.be/Lln1KXx2ZYM
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We know that stars start with a cloud of gas and then turn into a glowing ball. But how exactly does this process happen? How do stars turn on? Astronomers have been using JWST to find out.
π£ Guest: Adam Rubinstein
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00:00 Intro
02:39 Young stars
11:55 Going from not-a-star to a star
14:22 JWST data
33:51 Working with JWST
45:54 Current obsessions
50:12 Final thoughts
πΊ VIDEO VERSION
https://youtu.be/T_tHtWngvTA
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Can there be Dark Energy detectors? When will Sgr A start shrinking? Should the Prime Directive apply to Mars? Can we bring a proper observatory in space? Answering all these questions and more in this week's Q&A show.
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00:00 Start
00:29 [Alaris] What about Dark Energy detectors?
08:40 [Ardena] Why don't we see different constellations during the year?
11:15 [Asuria] When will Sagittarius A start shrinking?
13:42 [Belote] Can we build a space station observatory?
18:44 [Belsa] How do we see objects falling into black holes?
20:14 [Cartego] How will interstellar communication work?
21:48 [Chulak] Should the Prime Directive apply to Mars?
26:18 [Dakara] Does Mars have meteors from Earth?
27:32 [Edora] Why do comets leave tails?
29:03 [Goronak] Can black holes explode?
30:43 [Hadante] Does liver damage make Mars trips impossible?
πΊ VIDEO VERSION
https://youtu.be/KFsIuE4BiaQ
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Starship takes its fifth test flight, Europa Clipper launches successfully, China’s science plans from now until 2050, and Jupiter’s jiggly Great Red Spot.
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00:00 Intro
00:14 Starship IFT-5
03:11 Europa Clipper launch
06:41 Uranus seen from both sides
08:41 China's space plans
11:06 Jiggling Great Red Spot
13:08 Vote results
13:56 Possible Volcanic exomoon
15:41 Giant cluster spitting out stars
17:37 Axiom's spacesuit design
18:44 Guide to Space
πΊ VIDEO VERSION
https://youtu.be/IIT-n9-HlfA
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What's the best way to do science communication? Will Jupiter expand when the Sun dies? How would aliens experience their environment? Can New Horizons get new targets in future? Answering all these questions and more in this week's Overtime Q&A.
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00:00 Start
00:59 How can Hawking radiation escape a black hole?
03:47 Will Jupiter also expand when the Sun expands?
05:08 Why don't astronomers use the exoplanet names?
07:05 Will the Indians beat everyone to the Moon?
08:11 Do I feel threatened by ChatGPT?
10:28 What's the best way to do science communication?
11:48 How would aliens experience their environment?
14:19 Is the surface of the Moon littered with minerals?
15:43 What is the Universe orbiting?
16:03 Will New Horizons find new targets?
16:44 Would I go back to school to become an astronomer?
17:31 What are China's plans for the Moon?
20:07 Thoughts on the newer aerospike engines?
21:53 Should we spread life in the Solar System?
23:16 What are my favorite moons?
πΊ VIDEO VERSION
https://youtu.be/32_zjx-dHRw
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SpaceX caught Super Heavy with Mechazilla. Starship survived re-entry and did a precise landing in the ocean. How did they do that? What does it mean for SpaceX? What to expect from IFT-6 now?
πΊ Scott Manley:
https://www.youtube.com/@scottmanley
πΊ Marcus House:
https://www.youtube.com/@MarcusHouse
π IFT-4 Analysis: https://youtu.be/ecMlV4W_CLU
π IFT-3 Analysis: https://youtu.be/EVic941kQ44
π IFT-2 Analysis: https://youtu.be/ReXZvXPak4U
π IFT-1 Analysis: https://youtu.be/RGcdjJj-f4g
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00:00 Intro
01:05 Flight 5
02:25 Initial plan for the test
03:54 Liftoff
05:50 Hot staging
10:04 Super Heavy catch
16:01 What were the odds
20:38 Future versions of Starship
23:42 Starship's re-entry and splashdown
37:38 The aftermath
42:28 Flight 6
58:11 Final thoughts
πΊ VIDEO VERSION
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A new spacecraft is going to look at the aftermath from the DART mission, the Milky Way is part of a much, much larger structure, an early galaxy that’s similar to the Milky Way, and Starship test flight five could be just around the corner.
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00:00 Intro
00:16 Nancy Grace Roman tests
02:09 Hera mission launched
04:02 Milky Way part of a much larger structure
06:12 Earliest spiral galaxy
07:19 JWST looks at Charon
09:50 Vote results
10:29 Water on the Moon
12:44 Super compact triple star system
14:02 Starship Flight 5 coming soon
16:22 Guide to Space
πΊ VIDEO VERSION
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How old is the Universe? Why do no missions go to Mars' ice poles? What does X-37B actually do? Why not abandon the SLS? Can Starship solve the problems Starlinks create? Answering all these questions and more in this week's Q&A.
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00:00 Start
00:39 [Alaris] How old is the Universe?
08:12 [Ardena] Why do no missions go to Mars' ice poles
11:04 [Asuria] What's the distance limit of a black hole's influence?
13:37 [Belote] What does X-37B actually do?
16:06 [Belsa] Why not abandon the SLS?
21:37 [Cartego] Is the Universe infinite or finite?
23:49 [Chulak] What's going on with Europa clipper?
27:45 [Dakara] Can Starship solve the problems Starlinks create?
31:53 [Edora] How often does the Earth capture another moon?
πΊ VIDEO VERSION
https://youtu.be/ZUw7HvtRZfc
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Planets at Bernard’s Star, Chinese lunar spacesuits, Voyager 2 Has to power down one of its instruments, and a comet seen from space.
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00:00 Intro
00:12 Planets found around the Barnard's star
02:13 Asymmetrical exoplanet
03:26 Crew Dragon's propulsive landing
04:29 Views from Polaris Dawn
05:11 China's new lunar spacesuits
06:25 ISS leaks. Again.
07:51 Vote results
08:26 Voyager-2 turns off one more instrument
10:10 Space balloon test
11:41 Black hole jet
13:07 Comet from space
πΊ VIDEO VERSION
https://youtu.be/BID90zOyZA4
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What are the limits for the telescopes of the future? Can you play disk golf on Mars or the Moon? Will all galaxies eventually fade away? When will we launch Voyagers v2.0? Answering all these questions and more in this week's Q&A.
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00:00 Start
00:27 [Alaris] What are the limits for future telescopes?
06:47 [Ardena] Can you play golf on Moon or Mars?
09:21 [Asuria] Why don't all rockets launch from the equator?
12:21 [Belote] Which telescopes should we be launching on Starship?
16:16 [Belsa] Will all galaxies eventually fade away?
19:01 [Cartego] Does Hawking radiation affect dark matter?
21:38 [Chulak] Will there be another Voyager mission?
24:55 [Dakara] Do we live forever?
28:12 [Edora] Have we seen Oort clouds of other solar systems?
30:54 [Goronak] Will earth resources be enough for SpaceX?
35:13 [Hadante] Will I cover theories that don't have a Big Bang origin?
πΊ VIDEO VERSION
https://youtu.be/5wnrAo_RmC8
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Those aren’t Dyson Spheres they’re hotDOGs, the best gravitational lens in the Universe, new Starlinks are really bright in the radio, and SpaceX recovers its SuperHeavy.
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https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Intro
00:14 HotDOGs, Not Dyson Spheres
https://www.universetoday.com/168678/those-arent-dyson-spheres-theyre-hotdogs/
03:27 Best gravitational lens
https://www.universetoday.com/168672/this-might-be-the-best-gravitational-lens-ever-found/
04:44 Starlinks light pollution
https://www.universetoday.com/168658/second-generation-starlinks-are-32-times-brighter-in-radio-wavelengths/
07:07 SuperHeavy from a water grave
https://www.universetoday.com/168691/spacex-recovers-the-super-heavy-booster-from-flight-4/
08:08 Zebra rock on Mars
https://science.nasa.gov/blog/a-striped-surprise/
09:14 Vote results
09:53 Supernova and Earth life
https://www.universetoday.com/168687/how-a-nearby-supernova-left-its-mark-on-earth-life/
11:59 Two Chinese rocket hops
14:16 Guide to Space
14:35 Dyson sphere homework
πΊ VIDEO VERSION
https://youtu.be/2ipIUL64gLc
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Are we alone in the Universe? Probably, one of the most important questions one can ask. So, how are we currently trying to answer it and what happens when we finally do?
π¦ Support us on Patreon:
https://patreon.com/universetoday
π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Intro
01:24 Searching for extraterrestrial life
19:35 Agnostic methods of searching for life
26:20 What happens if we find life
29:38 Life as we don't know it
34:36 Searching for interstellar life
46:38 Which method will give results first
50:46 What if we don't find life
55:05 Current obsessions
58:59 Final thoughts
πΊ VIDEO VERSION
https://youtu.be/2_buH0GXFx8
π° EMAIL NEWSLETTER
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What happens if astronauts throw stuff from orbit? Can we travel through a black hole? What is our Sun's place in the Milky Way? How can human spaceflight become profitable? Answering all these questions and more in this week's Q&A show.
π¦ Support us on Patreon:
https://patreon.com/universetoday
π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Start
00:34 [Alaris] What is the place of our Sun in the Milky Way?
05:00 [Ardena] How to find communities that care about space?
09:34 [Asuria] What happens if an astronaut throws something towards Earth?
12:23 [Belote] How big is the void we live in?
15:20 [Belsa] Can you travel through a black hole to another Universe?
18:38 [Cartego] How is Mercury closer to Earth than Venus?
19:52 [Chulak] Did different arms of the Milky Way come from different mergers?
22:16 [Dakara] How would we see the farthest galaxies disappear?
25:15 [Edora] How can human space flight become profitable?
27:24 [Goronak] Which human-made thing will be first to get to another star?
32:16 [Hadante] What are my favourite telescopes?
34:23 [Hebridan] Could supermassive black holes be made of lost anti-matter?
37:39 [Jenev] Can we reuse parts of ISS?
πΊ VIDEO VERSION
https://youtu.be/LE-0sY1tEjg
π° EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
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Astronomy Cast: http://www.astronomycast.com/
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Could we repair missions like JWST and Gaia? Polaris Dawn returns to Earth, did Earth once have rings? and a peanut-shaped asteroid just drifted past Earth.
π¦ Support us on Patreon:
https://patreon.com/universetoday
π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Intro
00:16 Repairing missions at L2
https://www.universetoday.com/168584/there-could-be-a-way-to-fix-spacecraft-at-l2-like-webb-and-gaia/
03:10 Polaris Dawn returns to Earth
https://polarisprogram.com/polaris-dawn-crew-returns-to-earth-achieving-major-objectives-during-their-five-day-mission/
05:22 Peanut-shaped asteroid flyby
https://www.universetoday.com/168616/nasa-watches-a-peanut-shaped-asteroid-drift-past-earth/
07:20 Earth might have had rings
https://www.universetoday.com/168579/earth-might-have-had-rings-half-a-billion-years-ago/
08:56 Earth's temporary moon
https://www.universetoday.com/168574/earth-will-have-a-tiny-new-mini-moon-for-a-few-months/
10:13 Vote results
10:54 Mission to Neptune
https://www.universetoday.com/168559/an-ambitious-mission-to-neptune-could-study-both-the-planet-and-triton/
13:22 Building a global light pollution map
https://gaia4sustainability.eu/gaia-4-sustainability/
14:35 Flying to Alpha Cen
https://www.universetoday.com/168534/new-video-shows-how-tiny-spacecraft-will-swarm-proxima-centauri/
16:19 More space news
16:58 Getting involved in science
πΊ VIDEO VERSION
https://youtu.be/hm44Blv5Y0k
π° EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
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This is an unusual interview for my channel. It's mostly about AI, our current developments and the threats it poses to us.
π¦ Support us on Patreon:
https://patreon.com/universetoday
π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Intro
01:51 Arrival of LLMs
06:30 Alignment of AI
17:35 Existential dangers
18:58 The Pause AI movement
23:47 Safety
32:42 Wake-up calls and red lines
39:12 Possible response
41:43 AI as part of evolution
44:25 Simulation hypothesis and the Fermi Paradox
49:52 How to get involved
51:48 Current obsessions
57:19 Final thoughts
πΊ VIDEO VERSION
https://youtu.be/A4M3Q_P2xP4
π° EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
Subscribe. It's FREE: https://universetoday.com/newsletter
π§ PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
π€³ OTHER SOCIAL MEDIA
Twitter: https://twitter.com/fcain
Twitter: https://twitter.com/universetoday
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π© CONTACT FRASER
[email protected]
βοΈ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0) - Show more
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