![[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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We're still waiting for the results from JWST about the atmospheres on the TRAPPIST-1 planets. But is there a way for red dwarf planets to keep atmospheres on planets. Latest research seems to show that it might be possible.
π£ Guest: Dr. Joshua Krissansen-Totton
https://depts.washington.edu/astrobio/wordpress/profile/joshua-krissansen-totton/
π The erosion of large primary atmospheres typically leaves behind substantial secondary atmospheres on temperate rocky planets
https://www.nature.com/articles/s41467-024-52642-6
π¦ Support us on Patreon:
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00:00 Intro
02:09 Problems with M dwarfs
11:22 Holding on to atmospheres
19:46 JWST observations
24:10 Habitable worlds observatory
32:40 Trappist-1 results wen?
40:22 More interviews
πΊ VIDEO VERSION
#TODO_LINK
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Should they teach conspiracy theories in schools? How can we preserve history? How restricted is JWST because of its sunshield? Answering all these questions and more in this week's Overtime Q&A.
π¦ Watch our videos with no ads
π Get additional audio episodes of Overtime
https://patreon.com/universetoday
00:00 Start
00:26 Should conspiracy theories be taught in school?
08:13 How much does the sunshield block JWST?
10:19 How can we protect history?
14:27 Will we find ancient civilizations on other planets?
18:03 Why not use the proper name for the Sun and Moon?
18:55 Is there a Moon timezone?
19:56 Is the edge of the Observable Universe set by aliens?
πΊ VIDEO VERSION
https://youtu.be/vPzWeZydMbE
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Missing episodes?
-
Will SpaceX be able to deliver Starship in time for Artemis? Will Elon and Donald cancel SLS and replace it with Falcon Heavy? Is there any chance for real competition with SpaceX? How serious is the space race with China? Finding out the answers in this interview.
π£ Guest: Eric Berger
https://arstechnica.com/author/ericberger/
π¦ UT Extra: Future of Space Journalism
https://patreon.com/universetoday
π Eric Berger's New Book "Reentry: SpaceX, Elon Musk, and the Reusable Rockets that Launched a Second Space Age"
https://www.goodreads.com/book/show/205309521-reentry
00:00 Intro
01:12 Reentry and the rise of SpaceX
10:24 What happens to SLS
20:17 The state of Starship
30:45 Blue Origin and other competition
35:29 Space race with China
42:11 Questions from the Patreon Community
53:22 Current obsessions
55:11 Final thoughts
πΊ VIDEO VERSION
https://youtu.be/_igVSf6tyJs
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Moon has a non-uniform bumpy gravitational field. We can use these anomalies to launch stuff off the surface of the Moon with electromagnetic launchers. How exactly can we do it? Finding out in this interview.
π£ Guest: Dr. Pekka Janhunen
https://www.mpe.mpg.de/person/18090/2169
π Launching mass from the Moon helped by lunar gravity anomalies
https://arxiv.org/abs/2410.09616
π Terraforming the dwarf planet: Interconnected and growable Ceres megasatellite world
https://arxiv.org/pdf/2011.07487
π¦ Support us on Patreon:
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More interviews:
π Solar Gravitational Lens with Slava Turushev:
https://youtube.com/live/lqzJewjZUkk?feature=share
π Realistic Interstellar Travel with Andrew Higgins
https://youtu.be/SkGRVvA23qI
π‘ Asteroid Habitats with Adam Frank
https://youtu.be/Z-hH3-z56cg
00:00 Intro
02:51 Electrostatic sail updates
07:15 Launching stuff from the Moon
14:46 Finding trajectories
18:44 Practical applications
30:56 Mining Ceres
38:32 Future of humanity
42:53 More interviews
πΊ VIDEO VERSION
https://youtu.be/VP4fn0_cb24
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Some good environmental news, the Roman Space Telescope gets its mirror, astronomers defy the zone of avoidance, and moving stars halfway across the Milky Way
πΈ New Zealand Astrophotography Competition:
https://www.universetoday.com/169293/our-breathtaking-cosmos-new-zealand-astrophotography-winners-announced/
π¦ Support us on Patreon:
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00:00 Intro
00:14 Good news!
https://www.universetoday.com/169251/good-news-the-ozone-layer-hole-is-continuing-to-shrink/
02:41 Nancy Grace Roman gets its mirror
https://www.nasa.gov/missions/roman-space-telescope/telescope-for-nasas-roman-mission-complete-delivered-to-goddard
05:01 Leonides
https://www.universetoday.com/169124/is-an-off-year-leonid-outburst-in-the-cards-for-november/
06:27 Trash compactor
https://www.universetoday.com/169229/a-trash-compactor-is-going-to-the-space-station/
07:43 Astronomers defy the Zone of Avoidance
https://www.universetoday.com/169287/astronomers-defy-the-zone-of-avoidance-to-find-hundreds-of-new-galaxies/
10:07 Finding black holes by their light echoes
https://www.universetoday.com/169227/using-light-echoes-to-find-black-holes/
11:33 Vote results
12:11 Life under ice on Mars
https://www.universetoday.com/169296/how-life-could-live-under-the-ice-on-mars/
13:46 Stellar engine
https://www.universetoday.com/169255/a-spider-stellar-engine-could-move-binary-stars-halfway-across-a-galaxy/
16:08 Habitable worlds observatory
17:05 More space news stories
17:49 New Zealand astrophotography competition
πΊ VIDEO VERSION
https://youtu.be/d3eNRzrJRqY
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π¦ Support us on Patreon:
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π£ Guest: Dr. Sebastian Rabien
https://www.mpe.mpg.de/person/18090/2169
π Membrane Space Telescope: Active Surface Control with Radiative Adaptive Optics
https://arxiv.org/pdf/2410.07741
00:00 Intro
02:27 Adaptive optics in space
05:17 Membrane-based telescopes
22:48 Taking membrane telescopes to space
32:54 A practical next step
34:02 Questions from patrons
36:54 Working with ELT
44:30 More interviews
πΊ VIDEO VERSION
https://youtu.be/36t-UGXfllk
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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
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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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π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
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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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.
π¦ Support us on Patreon:
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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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π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
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.
π¦ Support us on Patreon:
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π Suggest books in the book club:
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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
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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
π¦ Support us on Patreon:
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π Suggest books in the book club:
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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.
π¦ Support us on Patreon:
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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.
π¦ Support us on Patreon:
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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.
π¦ Support us on Patreon:
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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
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
01:05 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
https://youtu.be/Flv1W6AR-cU
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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.
π¦ Support us on Patreon:
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π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
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
https://youtu.be/LI7R-LM3Ifw
π° EMAIL NEWSLETTER
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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.
π¦ Support us on Patreon:
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π Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
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
π° EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
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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.
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
00:12 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
π° EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
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π© CONTACT FRASER
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βοΈ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0) - Show more
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