Universe Today Podcast

In this week's last QA of 2020, I go long answering questions about space and astronomy. I talk about the news of a radio signal received from Proxima Centauri, an update on my attempts to learn Mandarin Chinese, and a long diatribe about megaconstellations and their impact on astronomy.

00:00:00 Start

00:02:51 How do we know the rotation rate of gas planets?

00:05:21 Green blobs

00:05:42 Radio signal from Proxima Centauri

00:11:25 Learning Chinese

00:17:05 Why don't we live in a black hole?

00:18:37 Is nuclear propulsion legal?

00:21:50 Are there planets that have no knowledge of space?

00:24:57 Will the speed of light change our view of the conjunction?

00:26:25 Should we build a super-Kepler?

00:29:00 What motivation is there for space colonization?

00:31:23 Better name for dark matter?

00:32:15 Why learn Chinese?

00:35:12 Where will humans go instead of Mars?

00:37:00 Will we detect heavier elements after the island of stability?

00:38:40 Will there be a future mission to Neptune?

00:39:51 Should we send a mission to Alpha Centauri?

00:41:23 What would the Milky Way look like from above?

00:43:00 Updates on O'Neill cylinders?

00:45:10 Should we change our behaviour if we live in a simulation?

00:47:06 Is the Universe 99.99% devoid of life?

00:50:27 Will I do QAs in Mandarin?

00:51:06 What's the terminal velocity speed of Starship?

00:52:04 How to push Venus into the Sun?

00:53:04 Am I enjoying The Expanse?

00:54:15 Could Hubble show the conjunction?

00:54:37 How big were Pop 3 stars?

00:58:15 What missions would I do if I was the head of NASA?

00:59:49 Will robots replace people most of the time?

01:01:15 Favorite missions that never happened?

01:02:20 Backyard observatory?

01:03:20 ESA's reusable rocket plans

01:07:25 Can a remote colony be self-sustaining?

01:10:11 What about VASIMIR?

01:12:17 How bad will Starlink be for astronomy?

01:25:27 Could you extrapolate the position of stars in the sky?

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Support Universe Today Podcast

00:00:00 Start

00:04:45 Can we know how much of the Moon is Earth and what is Theia?

00:06:41 Where did the Earth's water come from?

00:09:24 Would alien AI be friendly?

00:12:01 How far could we detect alien civilizations?

00:15:58 Why isn't metallic hydrogen made with nuclear weapons?

00:19:37 Is there water on Titan?

00:22:35 Is the outer Solar System rich in water?

00:24:03 Do stars leak hydrogen?

00:26:32 Can we own mining facilities on the Moon?

00:31:08 Is the Universe orbiting a huge black hole?

00:33:20 What are all the stuff behind me?

00:34:35 Why is it taking so long to send missions to the ice giants?

00:36:58 Favorite lunar lander?

00:40:13 Why is everyone making fun of Starship?

00:44:10 Can ion engines be scaled up?

00:48:00 Could a Falcon 9 carry Orion?

00:51:13 Am I happy to see Bridenstine step down?

00:52:30 What are the limitations of horizontal launches?

00:55:15 What about Sea Dragon?

00:59:05 Why does it take so long to get to Jupiter?

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Weekly Space Hangout: Weekly news roundup with Fraser, special guests, and other space journalists.

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Astronomy Cast: Award-winning, long-running deep dive into space and astronomy with Fraser and Dr. Pamela Gay.

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You are free to use my work for any purpose you like, just mention me as the source and link back to this video.

Support Universe Today Podcast

My guest this week is the science journalist Elizabeth Howell. Dr. Howell is one of the most prolific space journalists working in the field, contributing thousands of articles across almost every space news site (including Universe Today).

She has also written and collaborated on several books. Her latest book is called "Canadarm and Collaboration", and it's all about Canada's role in spaceflight.

https://elizabethhowell.ca/

Our Book is out!

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In this week's live questions show, I explain why planets can remain habitable long after their stars have died, what we're going to do now that Arecibo has collapsed, how we'll explore the oceans underneath Europa. I also answer the question of whether or not I'm ready to learn about the secret Galactic Federation.

Our live shows are provided ad-free thanks to the support of our amazing patrons. Join our community at https://patreon.com/universetoday.

00:00:00 Start

00:06:07 Can white dwarf stars have planets? Is it habitable in the long term?

00:09:50 Can bugs fly on the space station?

00:11:16 How will we track asteroids without Arecibo?

00:13:41 Could Arecibo have been collapsed safely?

00:16:28 Can ISS dodge meteors?

00:18:45 What would it take to rebuild Arecibo?

00:19:45 Is there dark matter here in the Solar System?

00:22:59 No ads

00:23:17 Will we be watching the conjunction of Saturn and Jupiter?

00:23:40 Will Arecibo engineers be able to get other jobs?

00:24:20 Could there be captured interstellar objects in the Solar System?

00:26:50 Will I be watching the Starship test?

00:30:43 Seriously? Conjunction Star Party?

00:31:41 Will a Ryugu sample be contaminated by the Solar System?

00:33:55 Will China share their space station?

00:37:43 Should James Webb launch on a different rocket?

00:40:17 How could we actually drill into Europa?

00:43:27 How will we scan Europa's oceans?

00:46:12 Are there positive and negative magnetars?

00:48:22 How will we not contaminate other worlds with Earth life?

00:50:22 What if someone is hurt on the International Space Station?

00:51:53 Can we join the Galactic Federation?

00:52:50 Are Cargo Dragons reused?

00:53:33 How will the Europa Clipper's lander work?

00:55:35 Why doesn't Starship have escape pods?

00:57:03 What about a mission to other Jovian moons.

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Read by 50,000 people every Friday. Written by Fraser. No ads.

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Weekly Space Hangout: Weekly news roundup with Fraser, special guests, and other space journalists.

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Astronomy Cast: Award-winning, long-running deep dive into space and astronomy with Fraser and Dr. Pamela Gay.

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🚀 CONTACT FRASER:

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🚀 LICENSE:

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You are free to use my work for any purpose you like, just mention me as the source and link back to this video.

Support Universe Today Podcast

My guest this week is Alex Ignatiev, from Lunar Resources. Alex and his team are working on a rover that could build solar panels, wiring and even radio antennae out of lunar regolith. This could support future bases or even radio telescopes.

You can learn more about Lunar Resources here:

http://lunarresources.space/

Our Book is out!

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Support Universe Today Podcast

In this week's live questions show, I explain how amateurs can contribute to space and astronomy research, will I sign up for Starlink, and what would happen if the supermassive black hole at the heart of the Milky Way turned into a quasar?

00:00:00 Start

00:03:13 How can amateurs can contribute to science?

00:05:50 What if Sgr* turned into a quasar?

00:07:00 Will the Universe end in a Big Rip?

00:10:32 How can solar sails be pushed by massless photons?

00:12:45 Do we know what rocky planets are made out of?

00:14:18 How did my mind change after interviewing Wallace Arthur

00:18:06 Will I sign up for Starlink Beta?

00:20:00 Am I looking forward to Dune?

00:23:30 Isn't the buy in cost for Starlink too expensive?

00:26:08 How can the methuselah star be older than the Universe?

00:27:31 Can we observe Oort clouds in other Solar Systems?

00:30:00 Does Andromeda have a supermassive black hole?

00:32:43 Any progress on Event Horizon Telescope?

00:34:35 What if an Earth-sized world fell into the Sun?

00:36:01 How can spacecraft journey from star to star?

00:37:31 Is Andromeda more massive?

00:38:31 Propulsion systems I'm excited about?

00:40:23 Is the Sun gaining or losing mass?

00:41:10 Why is it a good year for comets?

00:42:52 Can we use fusion for spaceflight?

00:46:15 How could we destroy Saturn's rings?

00:47:23 Any update on Terrascope?

00:48:52 Could we put astronauts to sleep?

00:51:53 What about cold fusion?

00:53:21 Is a hot big bang feasible?

00:55:15 Could there be planets in globular clusters?

00:58:20 Could neutrinos be dark matter?

Our Book is out!

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Audio Podcast version:

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What Fraser's Watching Playlist:

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Support Universe Today Podcast

Wallace Arthur is an evolutionary biologist and emeritus professor of Zoology at the National University of Ireland, Galway.

His newest book is called the Biological Universe, and features the search for life in the Milky Way and Beyond.

https://www.cambridge.org/core/books/biological-universe/4599E17C7FAAECE4A87038C62039C755

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

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Weekly email newsletter:

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

In this week's Open Space, we had a series of questions about the International Space Station. How long will it remain in orbit, and what role will it continue to play with other space stations under construction? We also talked about how much longer the Earth will remain habitable, and if it could be possible to replace Arecibo.

00:00:00 Start

00:03:35 How much longer with the Earth be habitable?

00:06:30 The great conjunction

00:09:11 Is nuclear power a good option in space?

00:13:31 What is the future of the ISS?

00:18:24 What are the chances of replacing Arecibo?

00:21:57 Couldn't we melt down the station for raw material?

00:23:35 What do I think of Axiom's private space station?

00:27:28 What's the best supernova candidate?

00:32:25 Could we add mass to Mars to restart its core?

00:36:03 Am I excited about the next Gaia release?

00:40:45 Are we looking backwards in time?

00:42:00 How's Chinese going?

00:46:39 What's the future of the Thirty Meter Telescope?

00:50:24 Will there be more international collaboration?

00:54:45 How much of the Universe has already disappeared?

00:56:33 Future telescope names?

00:57:00 Legit warp drive?

00:59:45 Any value putting a telescope on Mars?

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

Weekly email newsletter:

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Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at: https://www.patreon.com/universetoday

More stories at: https://www.universetoday.com/

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

00:00:00 Start

00:01:31 How much oxygen is too difficult?

00:03:46 Do the Falcon 9 boosters really land, or does the camera always cut out?

00:04:55 Could SpaceX have succeeded without NASA?

00:07:53 Will Gateway get delayed too?

00:11:20 Too drunk to control a telescope?

00:12:38 Is the Universe heating up?

00:16:00 Why rush to Mars?

00:19:50 Why research things that'll happen in the far future?

00:22:10 Could we use railguns?

00:26:00 Does thinking about the Universe drive you crazy?

00:28:45 Why don't we send cubesats in all directions?

00:31:32 Why could reduce the atmospheric pressure of Venus?

00:33:13 What's the farthest humans will go?

00:37:17 Will self replicating robots be built?

00:41:47 Will we never go to other stars?

00:44:07 Could a Dyson Sphere hide its radiation?

00:46:30 Where is the life in the Universe?

00:48:00 Dyson Sphere is a dumb idea.

00:49:47 What will be attributed to aliens next?

00:50:00 What are the cause of fast radio bursts?

00:53:30 Will we control space junk?

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

Weekly email newsletter:

https://www.universetoday.com/newsletter

Weekly Space Hangout:

https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at: https://www.patreon.com/universetoday

More stories at: https://www.universetoday.com/

Twitch: https://twitch.tv/fcain

Follow us on Twitter: @universetoday

Like us on Facebook: https://www.facebook.com/universetoday

Instagram - https://instagram.com/universetoday

Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

Dr. Peter Woit is a theoretical physicist and senior lecturer in the math department at Columbia University. He's a critic of string theory, wrote a book called "Not Even Wrong" and maintains a blog of the same name.

http://www.math.columbia.edu/~woit/wordpress/

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

Weekly email newsletter:

https://www.universetoday.com/newsletter

Weekly Space Hangout:

https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at: https://www.patreon.com/universetoday

More stories at: https://www.universetoday.com/

Twitch: https://twitch.tv/fcain

Follow us on Twitter: @universetoday

Like us on Facebook: https://www.facebook.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

In this week's live QA, I talk about Elon Musk's hope of establishing a free Mars, the future of gravitational wave detectors, and what do I think about trying to live in other places in the Solar System?

00:00:00 Start

00:03:00 Thoughts on Bridenstine leaving NASA?

00:08:10 Should we declare a Free Mars?

00:11:43 How sensitive will gravitational wave detectors become?

00:17:05 More damage at Arecibo

00:19:20 Why is the Moon the same visual size as the Sun?

00:22:02 Are white holes real?

00:25:48 Any hard sci-fi

00:28:30 Why doesn't Elon talk about nuclear propulsion or artificial gravity?

00:31:03 Why is artificial gravity research so expensive?

00:33:00 What's going to happen with Artemis?

00:37:33 What do I think about GPT-3?

00:42:43 Could we live on Venus?

00:48:00 Give Venus an artificial satellite?

00:49:22 Would Mercury be better to live on?

00:51:00 What is the Great Attractor?

00:52:27 Is Titan the best?

00:53:16 Live underground on Venus?

00:55:00 Is Mercury a good source of metals?

00:55:56 Could we terraform Ceres?

00:58:15 How close can planets get to their star?

Support Universe Today Podcast

In this week's questions show, I talk about the Dark Forest theory in the Three-Body Problem series of books. Is it a compelling answer to the Fermi Paradox? How much of a risk is dust to interstellar travel? Is black hole evaporation negated by black holes absorbing additional material and energy?

00:00 Start

00:46 Is the Dark Forest a reasonable answer to the Fermi Paradox?

04:05 How much dust is in interstellar space?

05:57 Can we go faster than the Voyagers?

08:24 Are black holes gaining mass faster than they're evaporating?

10:07 Is abiogenesis happening right now?

13:47 How do we calculate the habitable zones around other stars?

15:45 How close can binary stars be and still be habitable?

17:50 Could we find debris in the Lagrange Points?

19:27 Can gravitational waves let us see past the CMB?

22:07 What is a galactic halo?

23:49 Are there gas dwarfs?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

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https://www.darkskytraveller.com.au/fredwatson

Space Nuts Podcast

https://podcasts.apple.com/ca/podcast/space-nuts-astronomy-space-and-science-news/id1080090608

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00:00:00 Start

00:04:10 Searching for exomoons

00:07:35 Why I hate embargoes

00:11:29 Discovery of water on the Moon

00:17:00 Could Spitzer target the Moon?

00:17:30 Would Jupiter's magnetosphere protect you?

00:20:56 Any space telescopes for Starship?

00:26:27 Cost of a replacement James Webb?

00:27:45 Do you need gravitational assists to go to the outer Solar System?

00:30:49 Is Juno still flying?

00:31:17 When will Starship do its next hop?

00:32:35 Could you have a world made entirely of water?

00:36:05 Will amateurs be able to use Gaia?

00:38:16 What's the impact of James Webb on other missions?

00:43:26 How can small businesses work with NASA?

00:47:00 Quantum foam particles.

00:48:40 What are the most habitable stars?

00:52:36 Does nothingness exist?

00:55:10 What does it mean that the Universe is expanding?

Our Book is out!

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00:00 Start

05:54 Have we learned any more about Venus?

08:31 Elon Musk interview with the Mars Society

11:15 How small would Earth be as a black hole?

11:31 Could space be infinite at the Big Bang?

13:57 Will we mine the Moon for Helium 3?

17:08 How does inflation improve the Big Bang?

23:22 Why didn't the Universe collapse again?

27:03 OSIRIS-REx update

28:17 Could you turn condensed light into matter?

30:11 Will the magnetic reversal be devastating?

32:35 How can you have atmospheric pressure without a container?

33:45 What will Starship land on?

34:47 Will it cost more than a ton of gold to bring gold back from the Moon.

36:20 Why do I think multicellular life is rare?

41:47 Starfleet or Space Force?

42:38 Would there be a Universe without us to observe it?

44:27 What rocket launch do I want to see?

45:39 What's the difference between the SpaceX suits and the shuttle suits?

47:43 Will the first person on Mars be Chinese?

49:23 Could we start building our Dyson Sphere now?

51:37 Are there any full views of the Earth from satellites?

54:47 Have any black holes evaporated yet?

55:45 Is interstellar space cold or hot?

56:59 Could you use the transit method to communicate between stars?

58:32 Is Planet 9 a black hole?

Our Book is out!

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This week I'll be talking Dr. Seth Shostak from the SETI Institute about his work searching the Universe for evidence of extraterrestrials.

Our Book is out!

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Support Universe Today Podcast

Support Universe Today Podcast

In this week's live questions show, I answer questions about drilling for microbes on Mars, missions that could survive the surface of Venus, and if anyone else is dissatisfied with the Big Bang.

00:00 Start

04:18 Any updates on the Chinese mission to Mars?

05:41 How many exoplanets are confirmed?

07:18 Can any rovers drill for microbes?

10:31 Any ways to survive the surface of Venus?

13:10 How do you know if an exoplanet has cleared its path?

15:31 Is anyone dissatisfied with the Big Bang?

19:50 Favorite solution to Planet 9?

21:48 When did I start getting interested in space?

22:55 How likely is the Venus phosphine abiotic?

27:45 How intense is the radiation field at Jupiter?

28:54 Will I ever stream video games?

34:03 Could we detect planets in the Magellanic Clouds

36:13 Would would life be like near a black hole?

38:40 How many launches have I seen?

41:50 Is quantum mechanics a big hoax?

42:35 Good targets for astrophotography?

44:04 Raised by Wolves?

45:02 Are we living in a black hole?

45:31 When will there be lunar tourism?

45:60 Have I read Artemis?

47:20 Is the Universe computable?

47:41 How can the Universe expand faster than the speed of light?

50:00 Why is the Moon drifting away from us?

52:00 Do we know how fast the Universe is expanding?

53:17 Do Mercury and Venus pass in front of the Sun?

54:35 Most significant scientific advance in the last 20 years?

55:43 Is the expansion rate different in the Universe?

58:10 Will we screw up the climate permanently?

59:43 Wrap up

Our Book is out!

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Black holes are already mind-bending enough. Matter and energy compressed into a region so dense that the escape velocity exceeds the speed of light. Places where space and time are tangled up so much that even if you could go faster than light speed, you’d still end up at the singularity.

Astronomers know of two kinds of black holes in the Universe: stellar mass and supermassive, and how we get them have been worked out pretty well.

But there’s a third class of black hole, one which has never been observed nor detected indirectly, and yet it could explain some of the mysteries of the Universe, including the nature of dark matter.

Primordial black holes.

Our Book is out!

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References:

https://www.omnicalculator.com/physics/schwarzschild-radius

https://phys.org/news/2020-01-primordial-black-holes.html

https://www.nasa.gov/feature/goddard/2016/nasa-scientist-suggests-possible-link-between-primordial-black-holes-and-dark-matter

https://arxiv.org/pdf/1908.05403.pdf

https://arxiv.org/abs/1909.01620

https://news.northwestern.edu/stories/2020/09/scientists-detect-first-of-its-kind-intermediate-mass-black-hole-gravitational-waves/

https://arxiv.org/abs/2003.10455

https://phys.org/news/2020-07-scientists-planet-primordial-black-hole.html

https://arxiv.org/search/?query=primordial+black+holes&searchtype=all&source=header

https://www.youtube.com/watch?v=E_7iDe5KYFU

Support Universe Today Podcast

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Support Universe Today Podcast

Sarah Scoles is a Denver-based science writer who has supplied articles to WIRED Science and Popular Science. Her newest book is called "They Are Already Here: UFO Culture and Why We See Saucers".

http://www.sarahscoles.com/

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00:00 Start

00:16 Did we infect Venus with life?

02:27 Can we terraform Venus with bacteria?

04:03 This is boring.

06:21 It's probably not life.

09:07 Phosphine is on Jupiter too.

10:50 Are there spaceflight insurance companies?

12:59 Why can gas giants remain spherical?

15:21 What if the Moon was in geosynchronous orbit?

17:42 Are astronauts falling?

19:40 Could we use interstellar hydrogen as fuel?

22:52 Could supermassive black holes be primordial black holes?

26:25 Are there rogue intergalactic stars?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

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Support Universe Today Podcast

Well, did you hear the big news? Life on Venus. Life… on... Venus. Now, where have we heard this before? Oh right, life on Mars. If you’ve been watching any of my videos or listening to Astronomy Cast, you’re cautiously optimistic. Skeptical, but hopeful.

That’s the right position to take, because buckle up, the internet’s about to run with this news. It’s going to be difficult to figure out what was really discovered, and what this means for the search for life in the Universe.

Want to see this video early? Join our community at https://www.patreon.com/universetoday

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References:

https://www.eso.org/public/news/eso2015/

https://solarsystem.nasa.gov/resources/681/solar-system-temperatures/

https://www.esa.int/Science_Exploration/Space_Science/Venus_Express/The_unexpected_temperature_profile_of_Venus_s_atmosphere

https://www.liebertpub.com/doi/full/10.1089/ast.2020.2244

https://phys.org/news/2020-07-scientists-volcanoes-venus.html

https://www.sciencemag.org/news/2020/07/scientists-pull-living-microbes-100-million-years-beneath-sea

https://www.nasa.gov/feature/goddard/2020/nasa-goddard-team-selected-to-design-concept-for-probe-of-mysterious-venus-atmosphere

Support Universe Today Podcast

Support Universe Today Podcast

In this week's questions show, I wonder about the supernova that formed the Solar System, how astronauts deal with air pressure differences, and how we're going to handle the cold temperatures on Mars.

Featuring Astronaut Terry Virts

https://terryvirts.com/

00:00 Start

01:17 Where are the supernovae that created the Solar System?

03:53 Can astronauts get infected on Mars or in space?

05:20 When a black hole forms, is there still a neutron star inside?

08:02 Why is the CMB in its current location?

09:23 Is the idea of a primordial black hole absurd?

12:59 Why does the simulation get support while UFOs don't?

15:45 Could the Solar System capture a rogue planet?

17:57 Can we see the Orion arm of the Milky Way?

19:57 Handling the cold on Mars?

22:22 How much can we mine the Moon?

23:45 Will Pluto and Neptune ever collide with each other?

24:41 How do astronauts deal with ear pressure differences?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

Support Universe Today Podcast

In this week's questions show, you wondered if the simulation hypothesis is a good answer to the Fermi Paradox. How to get a career in space manufacturing? Will a compass work on Mars? And more...

Featuring Moiya McTier

https://www.youtube.com/channel/UCAzGSsOGMAJeet8SkO8TWmA

https://twitter.com/GoAstroMo

https://exolore.captivate.fm/listen

00:00 Start

00:27 Could the simulation hypothesis explain the Fermi Paradox?

02:54 The future of space manufacturing?

05:47 Does a compass work on Mars?

07:10 Why don't we have video from Juno and other spacecraft?

11:10 Could a black hole spin so fast that it tears itself apart?

13:08 Will the Universe eventually expand out of view?

16:31 Why do we assume Dyson Spheres are inevitable?

17:01 What megaprojects could Starship be used for?

22:26 How will astronauts be protected from meteorites on the Moon?

24:42 How to get started in astrophotography

29:07 How many planets are confirmed through multiple methods?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

In this week's questions show, I consider what the benefits might be to humanity if we discover that we aren't alone in the Universe. How long did Mars planetary dynamo take to turn off? Could we find and repair the lunar rovers?

00:00 Start

00:12 Would extraterrestrial life have any impact on us?

03:01 When did Mars shut down?

05:16 Could the rovers be repaired?

07:05 Would an ejected star take its planets with it?

08:54 Dangerous to go to Mars at the same time?

10:19 Is there any way to go faster?

13:37 Should the smallest black holes already have evaporated?

15:48 Shouldn't Voyager be coming back?

17:15 Could there be life inside Jupiter?

18:50 Does the Sun have a binary black hole partner?

19:57 Aren't I on vacation?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

In this week's questions show, I explain how it's possible for stars to orbit so closely they're actually touching. What are the limits to gravitational slingshots, and how astronomers know where to point their telescopes in the Universe.

00:00 Start

00:44 Can stars touch?

02:39 What is the maximum slingshot speed?

05:32 How do astronomers know where to look?

08:27 Could a planet orbit backwards?

10:56 Will nations allow deadly space lasers?

13:06 What if a black hole stopped rotating?

15:06 How would you control a warp drive?

17:32 Is Planet 9 a captured rogue planet?

21:36 Does this mean there are new physics?

25:08 How common are supernovae that don't leave a remnant?

27:14 Why would red dwarf planets be tidally locked?

28:54 How do space agencies decide to launch missions?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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When the Apollo astronauts first landed on the Moon, they couldn’t go far on foot. That’s why the three final missions were equipped with Lunar Roving Vehicles, or Moon buggies, which allowed the astronauts to cover much more ground and do more science.

Now that NASA is returning to the Moon by 2024 as part of its Artemis Program, it’s considering a fleet of new vehicles that will help astronauts roam far and wide across the surface of the Moon.

60 fps Apollo Videos from Dutchsteammachine

https://www.youtube.com/channel/UCRGEIYuo_HbUR6GhFLeEkPA

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Our Book is out!

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ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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References:

https://space.nss.org/wp-content/uploads/Lunar-Bases-conference-2-706-Lunar-Roving-Vehicle.pdf

https://nssdc.gsfc.nasa.gov/planetary/lunar/apollo_lrv.html

https://www.nasa.gov/mission_pages/apollo/missions/apollo11.html

https://www.nasa.gov/sites/default/files/atoms/files/exploration_rover_concepts_grc.pdf

https://www.researchgate.net/publication/228353156_Concept_for_a_Radioisotope_Powered_Dual_Mode_Lunar_Rover

https://www.lpi.usra.edu/lunar/documents/NTRS/collection2/NASA_CR_192034.pdf

https://www.nasa.gov/exploration/technology/space_exploration_vehicle/

https://www.nasa.gov/pdf/284669main_LER_FactSheet_web.pdf

https://www.nasa.gov/feature/nasa-to-industry-send-ideas-for-lunar-rovers/

https://www.nasa.gov/feature/nasa-administrator-signs-declaration-of-intent-with-japan-on-artemis-space-station

https://global.toyota/en/newsroom/corporate/27059582.html

https://www.youtube.com/watch?v=eney3cJBtow

Support Universe Today Podcast

In this week's questions show I explain why it's still important to do science, even if it's difficult, can we use multiple methods to measure distance, and why the Trojan asteroids don't collect into a single object?

00:00 Start

00:40 Why should we bother trying to understand the Universe?

05:01 Can different methods be used to measure distances to the same object?

07:50 Why don't Trojans collect into a single object?

10:24 Split the videos up?

13:02 Do supernovae cause a chain reaction?

14:27 Why settle the Milky Way?

16:48 What if a black hole came close to the Earth?

18:04 Is there an escape velocity from the Milky Way?

18:51 Could we detect something moving faster than light?

20:48 Could we detect pulsars in other galaxies?

22:44 When does a planet end, and an atmosphere begin?

24:06 Could we store photons for energy?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Weekly email newsletter:

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Astronomy Cast:

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Support us at https://www.patreon.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

When the largest stars die, it’s usually pretty obvious. Supernovae are visible from billions of light-years away. But recently astronomers watched a massive star just disappear. No explosion, nothing, it just… vanished?

Of course, it could have been dust. It’s always dust. But one intriguing possibility is that the star just imploded directly into a black hole, without the supernova detonation. And if that’s the case, is this happening more often, we just didn’t notice it?

Want to see this video early? Join our community at https://www.patreon.com/universetoday

Our Book is out!

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ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Weekly email newsletter:

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Support us at https://www.patreon.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

References:

https://www.eso.org/public/archives/releases/sciencepapers/eso2010/eso2010a.pdf

https://www.forbes.com/sites/startswithabang/2017/09/05/the-suns-energy-doesnt-come-from-fusing-hydrogen-into-helium-mostly/#456b5d0670f9

https://www.eso.org/public/usa/news/eso2010/

https://www.nasa.gov/feature/goddard/2017/collapsing-star-gives-birth-to-a-black-hole

https://www.forbes.com/sites/startswithabang/2017/12/26/direct-collapse-black-holes-may-explain-our-universes-mysterious-quasars/#1575aa7b71f0

https://www.youtube.com/watch?v=OEZu3pXAFWY

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This episode is a segment that we did in the Weekly Space Hangout talking about how astronomers are using masers (water lasers) to measure the expansion rate of the Universe.

You'd think that another, independent way to measure the expansion rate of the Universe would be helpful, but it's only deepened the mystery of the cosmological crisis.

Subscribe to the Weekly Space Hangout

https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg

Watch this episode:

https://www.youtube.com/watch?v=nzO-QhBFz04

Thumbnail credit: ESO/M. Kornmesser

Want to see this video early? Join our community at https://www.patreon.com/universetoday

Our Book is out!

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References:

https://www.universetoday.com/146523/evidence-is-building-that-the-standard-model-of-the-expansion-of-the-universe-needs-some-new-ideas/

https://arxiv.org/pdf/2001.09213.pdf

Support Universe Today Podcast

This week, it'll be the last Open Space with Fraser before the show goes on its summer hiatus until September. If you've got some burning space questions, no will be your chance to ask them.

Our Book is out!

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What Fraser's Watching Playlist:

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Support Universe Today Podcast

Earlier this year, NASA announced 4 new Discovery-class missions that they were considering. These are low-cost, rapidly-built missions that will help scientists understand some mystery in astronomy and planetary science.

One of these missions is called Trident, and it’s going to be targeting the Planet Neptune. And more specifically, it’s going to be providing close up pictures of its largest moon Triton.

Want to see this video early? Join our community at https://www.patreon.com/universetoday

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References:

https://www.jpl.nasa.gov/news/news.php?feature=7680

https://voyager.jpl.nasa.gov/galleries/images-voyager-took/neptune/

https://www.jpl.nasa.gov/news/news.php?feature=7597

https://www.hou.usra.edu/meetings/lpsc2019/pdf/3188.pdf

https://www.nasa.gov/planetarymissions/discovery.html

https://www.hou.usra.edu/meetings/lpsc2019/pdf/3188.pdf

https://www.youtube.com/watch?v=R-v7HRsanZY

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In this week's questions show, I answer what would happen if a supernova exploded right beside a black hole, how do we know that it's impossible to travel faster than the speed of light, can we hitch a ride on an interstellar object, and more...

00:00 Start

00:17 What if a supernova exploded right beside a black hole?

03:09 Is interstellar travel just too difficult?

05:25 How do we know FTL is impossible?

07:58 How does the Mars helicopter navigate?

09:18 Why does NASA still pay Boeing for Starliner?

11:25 How does the speed of causality work?

14:15 What if you watched a warp drive ship?

16:35 Will China go to Mars?

20:26 Why aren't we tidally locked to the Sun?

22:22 Maybe dark matter is in another dimension?

23:48 Can we hitch a ride on an interstellar asteroid?

26:15 Turning energy into matter

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

Support Universe Today Podcast

In this week's episode, I answer questions about alien life, why the ISS is at its current altitude, and of course, many questions about black holes.

00:00 Start

00:11 How do we know it's life?

02:00 Could smaller planets form directly?

04:33 Any way to service Hubble?

05:55 Boost the station up? What does that mean?

07:18 If you went the speed of light to 10 light-years away...

08:40 Will we change our DNA?

11:34 Is Paul really a Doctor?

15:13 Have any stars gotten closer than Alpha Centauri?

16:13 Why can't you escape an event horizon?

17:30 Are black holes a singularity?

19:44 Why have we found so many hot Jupiters?

22:25 Why is ISS at its current altitude?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

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Weekly email newsletter:

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Astronomy Cast:

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

Another week, another Open Space. In this week's questions show, I talk about planets orbiting red dwarf stars, if planets could steal moons from each other, and whether or not the space shuttle should have ever been built.

02:58 Is Proxima Centauri C a gas giant?

05:22 How doomed are red dwarf planets?

07:37 Could a planet steal a moon?

10:25 Should we sent asteroids back to Earth to mine them?

14:00 Do any sunlike stars have promising planets?

15:35 Why do meteors turn green?

17:51 Will Starlink communicate from Earth to Mars?

21:50 What if our supermassive black hole increased in mass?

23:35 Will spaceforce administer justice in space?

27:29 Will we discover life on Enceladus?

31:10 What is the limit of ion engines?

32:33 Have any lava tubes been explored?

34:05 How will we deal with astronaut mental health?

36:52 Would I want three telescopes at L3, L4, L5

39:10 How does the speed of gravity affect the movement of stars in the Milky Way?

40:15 Was the shuttle prematurely ended?

43:52 Is there competition for small rockets?

49:00 What if the Sun was different type of star?

51:28 Is space radiation underappreciated risk?

54:44 what are my expectations for James Webb?

55:38 What are the best ideas for cleaning space debris?

57:51 Will James Webb find biosignatures?

58:15 Does the Solar System line up with the Milky Way?

Our Book is out!

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What Fraser's Watching Playlist:

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

Astronomers have discovered thousands of exoplanets, and still need to confirm thousands more. And over the coming decades, we’ll probably learn of millions of planets, orbiting stars we’ve never heard of.

That’s why it’s reassuring to know astronomers are learning a tremendous amount about the closest star system to our own, Proxima Centauri. In fact, we now know of two planets orbiting the red dwarf star, one of which is in the habitable zone.

Thumbnail credit: NASA/Harvard-Smithsonian Center for Astrophysics/D. Aguilar

Our Book is out!

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Audio Podcast version:

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Weekly email newsletter:

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Support us at https://www.patreon.com/universetoday

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Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

References:

https://www.universetoday.com/146262/powerful-telescope-confirms-theres-an-earth-sized-world-orbiting-proxima-centauri/

https://arxiv.org/abs/1609.03449

https://arxiv.org/abs/2005.12114v2

https://advances.sciencemag.org/content/6/3/eaax7467

https://mcdonaldobservatory.org/news/releases/20200602

https://www.universetoday.com/145697/astronomers-might-have-imaged-a-second-planet-around-nearby-proxima-centauri-and-it-might-have-a-huge-set-of-rings/

https://arxiv.org/pdf/2004.06685.pdf

https://breakthroughinitiatives.org/initiative/3

https://www.youtube.com/watch?v=q2YkvWdUUNQ

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Another week, another Open Space. This week I answer questions about what we might see in the next 5 decades. When dark matter will get debunked, and who will carry the Mars torch after Elon Musk passes away.

03:35 What will happen in the next 5 decades?

07:09 Will dark matter be debunked?

10:50 Who will carry the Mars torch after Elon?

13:17 Do I have a PhD?

14:33 Could civilizations be hiding in the infrared?

19:07 What laws should be in place before a mission to Mars?

23:25 If you could name a space program?

24:28 Can light travel faster than light?

25:30 Why aren't we using gliders to access the ISS?

28:12 What if a white hole passed through the Solar System?

29:26 Where do Von Neumann probes get their raw materials?

30:30 Am I happy with the militarization of space?

33:21 Have I read the Bobiverse books?

33:37 What if the speed of light wasn't constant?

35:10 Is Planet X a myth?

37:41 How will James Webb view habitable exoplanets?

39:02 What is the most frustrating space myth?

41:30 Is there something beyond Neptune?

44:35 How do coronographs work?

47:28 Would incoming alien ships unite the Earth?

49:20 Could you fly through Jupiter?

51:48 Should we let aliens know we eat ham and pineapple pizza?

52:25 How can the core of Jupiter be hotter than the surface of the SuN?

53:18 What field does metallic hydrogen generate?

54:00 What sci-fi books would make good movies?

56:40 What's the most likely answer to the Fermi Paradox?

56:53 Is anything in space named after me?

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

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Weekly email newsletter:

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https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at: https://www.patreon.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

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In this week's episode of Open Space, I talk with Dr. Jamie Molaro, a planetary scientist who helped discover that the surface of asteroid Bennu has rocks that crack because of the constant day/night cycle.

Learn more about her work:

https://twitter.com/spacejammie

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

Weekly email newsletter:

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Weekly Space Hangout:

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Astronomy Cast:

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Support us at: https://www.patreon.com/universetoday

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Chad Weber - weber.chad@gmail.com

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I’d say half the astronomy-related videos on YouTube are all about black holes. Clearly, they’re a fascinating topic, but they’re also a mystery. How do you observe something that can absorb all the radiation and matter falling onto them, and nothing can ever escape? How do we know they’re really there, and what are the best observations we can make?

Today I’m joined by Dr. Paul Sutter, a cosmologist, and astrophysicist to talk about how we know black holes are really there and not just a figment of an astrophysicist’s imagination?

Paul's Channel: https://www.youtube.com/channel/UCBr7XOxxQyBHEwqkhoci7vw

Paul's new book:

http://www.pmsutter.com/book

Thumbnail credit: ESO

Our Book is out!

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Audio Podcast version:

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Weekly email newsletter:

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Support us at https://www.patreon.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

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In this week's questions show, I answer questions about how the International Space Station stays above the Earth's atmosphere, does dark matter need a better name? And how do astronomers know they're looking at exoplanets and not sunspots?

Michael Rodruck with Pennsylvania State University

https://sites.psu.edu/mrodruck/

00:18 How does the ISS stay up?

01:54 Does dark matter need a better name?

04:12 Could planets orbit something that isn't a star?

07:00 GOTO Telescopes

09:22 How do we know it's exoplanets and not sunspots?

11:55 Interstellar travel without wormholes?

14:23 Why make Mars habitable?

16:38 Have we mapped Venus?

18:23 What would it feel like to stand on a massive disk?

20:25 Can dark matter get concentrated into a black hole?

22:30 Are there even closer black holes?

24:21 How do we know how many stars in the Milky Way?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

Weekly email newsletter:

https://www.universetoday.com/newsletter

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Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at https://www.patreon.com/universetoday

More stories at https://www.universetoday.com/

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Chad Weber - weber.chad@gmail.com

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On Sunday, May 31st, 2020, a SpaceX Crew Dragon capsule carrying astronauts Robert Behnken and Douglas Hurley docked with the International Space Station. This was a tremendous accomplishment for SpaceX and NASA, giving the United States the capability of launching its own astronauts, and no longer relying on its Russian partners.

This was the 5th time that US astronauts went into orbit on a new kind of space vehicle, following in the footsteps of Mercury, Gemini, Apollo, and the Space Shuttle.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

Weekly email newsletter:

https://www.universetoday.com/newsletter

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https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at https://www.patreon.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

References:

https://www.nasa.gov/specials/ccp-press-kit/main.html

https://blogs.nasa.gov/commercialcrew/2020/05/27/historic-launch-pad-39a/

https://blogs.nasa.gov/commercialcrew/2020/05/31/international-space-station-welcomes-first-spacex-crew-dragon-with-nasa-astronauts/

https://www.space.com/2811-nasa-places-500-million-bet-firms.html

https://www.nasa.gov/exploration/news/COTS_selection.html

https://arstechnica.com/science/2020/05/the-trampoline-is-working-spacex-returns-human-spaceflight-to-america/

https://www.nasa.gov/specials/ccp-press-kit/dm1.html

https://blogs.nasa.gov/commercialcrew/2019/12/

https://www.nasa.gov/exploration/commercial/crew/index.html

https://spaceadventures.com/space-adventures-announces-agreement-with-spacex-to-launch-private-citizens-on-the-crew-dragon-spacecraft/

https://www.universetoday.com/144791/nasa-is-going-to-add-a-commercial-module-to-the-space-station/

https://blogs.nasa.gov/commercialcrew/2020/04/06/boeing-to-fly-second-uncrewed-orbital-flight-test-for-nasa/

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Another week, another Open Space. This week, I answered questions about whether space-time could freeze, are standard candles like Type 1a supernovae still useful? And is the Great Attractor just a black hole?

04:33 Could spacetime freeze?

06:48 Any plans for solar observing in the star parties?

07:26 Are standard candles still useful?

14:15 Predicting future locations of planets?

15:26 Is the great attractor a black hole?

19:02 Is there a speed limit for gravity assists?

20:04 Why are there so many red dwarfs?

22:02 Did the Big Bang happen in one place?

23:02 Map of the Solar System's magnetic fields?

23:45 Favorite space travel system?

24:15 Star party for Jupiter/Saturn conjunction?

25:15 Are there stars bigger than UY Scuti?

26:50 Can moons have moons?

28:47 Best Star Trek?

29:33 Does the Moon have Lagrange Points?

30:45 Will Virgo supercluster stay together?

32:11 Favorite artificial gravity?

33:00 Would aliens feel different gravity on Earth?

34:30 What else did Crew Dragon take to the station?

34:56 Are we in a new space race?

36:33 Could you use a Moon for artificial gravity?

37:29 Why does it have to be a space race?

40:25 What did I think of Space Force?

41:26 How would territory be allocated on the Moon?

43:50 Will Mars colonists live underground?

45:00 Is James Webb too big to fail?

47:09 What about NatGeo's Mars?

47:38 Canadian space projects?

50:08 Why no missions to Uranus and Neptune?

51:20 What is Blue Origin up to?

54:50 Isaac Arthur just got married!

56:37 Strange matter versus black holes?

57:00 Canada arms and Canada legs?

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

Weekly email newsletter:

https://www.universetoday.com/newsletter

Weekly Space Hangout:

https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at: https://www.patreon.com/universetoday

More stories at: https://www.universetoday.com/

Twitch: https://twitch.tv/fcain

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Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

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In this week's live Open Space, people wanted to know if solar sails really work, will we ever get close to the speed of light, what's the best way to get out of Venus' gravity well, and more?

01:46 Do solar sails really work?

02:48 Will we ever get close to the speed of light?

06:22 Best way to get off Venus?

08:45 What about the standard candle?

11:45 Why is it so hard to get to Mercury?

14:15 Could FTL escape a black hole?

15:10 How did the astronauts deal with regolith?

18:12 Could there be liquid water on Mercury?

19:41 What's the best place on Earth to look through a telescope?

21:01 Does the regolith get into spacesuits?

22:20 Could an Alcubiere Drive get out of a black hole?

23:15 Do I ever use the telescope behind me?

24:08 Why is the speed of light so disproportionate to the size of the Universe?

26:07 Do I use the RASA?

27:03 How will I watch Crew Dragon?

28:00 Could we build a particle accelerator on the Moon?

30:16 What if another system collided with us?

32:32 Is it worth launching visible light telescopes?

34:22 Would I live in orbit for a month?

36:20 Should we colonize Mars?

39:50 Where will we find life in the Solar System?

41:00 Will bigger rockets make simpler big telescopes possible?

45:49 Why is Andromeda heading towards us?

46:19 Do I believe in alternate universes?

47:26 Any good ideas for space debris?

50:31 Could a black hole eat a supernova?

53:14 What space problem keeps me up at night?

56:19 Is the Planck scale the resolution of the Universe?

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

What Fraser's Watching Playlist:

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Weekly email newsletter:

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Weekly Space Hangout:

https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at: https://www.patreon.com/universetoday

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Team: Fraser Cain - @fcain / frasercain@gmail.com

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Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast

In this week's questions show, I answer whether or not dark matter could become a black hole, how do we know the Universe is flat, and what would happen to the world's market for precious metals once we start mining asteroids?

Natalie Hinkel, SWRI

http://www.nataliehinkel.com/

Follow Natalie on Twitter:

https://twitter.com/natalie_hinkel/

00:26 Can dark matter turn into a black hole?

05:07 If the Universe is flat, how can it be expanding?

08:00 Will asteroid mining devalue markets on Earth?

10:06 Good binoculars for a newbie?

11:13 Why haven't we found Planet 9 yet?

12:55 What species will replace humanity on Earth?

16:14 What if someone found our spacecraft orbiting an interstellar object?

17:45 What if Venus and Earth swapped sizes?

19:09 Why do we need a reason for an accelerating Universe?

22:37 Is NASA moving too fast?

26:13 Could you use a leaf blower on the Moon?

27:51 Could you have an exoplanetary system without a star?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.

Our Book is out!

https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/

Audio Podcast version:

ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2

RSS: https://www.universetoday.com/audio

Weekly email newsletter:

https://www.universetoday.com/newsletter

Weekly Space Hangout:

https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/

Astronomy Cast:

https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

Support us at https://www.patreon.com/universetoday

More stories at https://www.universetoday.com/

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Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw

Chad Weber - weber.chad@gmail.com

Support Universe Today Podcast