Universe Today Podcast

My guest today is Dr. Markus Janson, an astronomy professor at Stockholm University. Dr. Janson and his co-authors have recently published a study investigating if ground-based observatory could use starshades to help directly image exoplanets.

https://link.springer.com/article/10.1007%2Fs10686-021-09792-y

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Support Universe Today Podcast

In the season finale of my questions show, I talk about high-altitude bacteria, traveling into the future, does it make sense to go back to University, and more. See you all in September!

00:00 Start

01:10 How high an altitude can bacteria survive?

04:02 Should I go back to university?

06:29 Could we terraform Venus with comets?

08:49 Could we detect life in Andromeda?

11:04 Could aliens perceive time differently?

13:01 Why do spacecraft use such old hardware?

15:20 What do I think about the billionaire space race?

17:16 How many satellites can we see?

19:31 Would I cryosleep into the future?

20:30 Should we only build smaller space telescopes?

24:40 Did we used to have better knowledge of the cosmos?

27:10 How would life be different close to a black hole?

29:22 Is there a business model for Starship?

31:23 Am I disappointed Trident wasn't chosen by NASA?

33:19 Are we the generation to find life beyond Earth?

34:25 How much better will LIGO get?

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

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In this week's questions show, I explain why Dyson Spheres (and Swarms) should actually be pretty easy to detect across the Universe. If it's possible to service the Hubble Space Telescope with a Falcon 9, and will computers take jobs away from astronomers.

00:00 Start

01:04 How could we detect Dyson Swarms?

07:24 How could we hide a Dyson Swarm?

10:03 Could a Falcon 9 service Hubble?

13:02 Will computers replace humans in astronomy?

16:30 Will any Venus missions be able to detect life?

18:43 Could you generate repeating gravitational waves?

20:25 What conventional wisdom will be disproven by science?

23:43 How much longer will Earth be habitable?

26:08 What will drive space exploration?

28:15 Will James Webb let us see more Universe?

29:27 What do I think about the similarity between cosmic filaments compared to the CMB?

30:27 What are some future propulsion systems?

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

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Support Universe Today Podcast

My guest today is Professor Lee Cronin from the University of Glasgow. Dr. Cronin investigates the chemistry of life and has developed methods that could help us detect it on other worlds - even life as we don't know it.

http://www.chem.gla.ac.uk/cronin/

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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

In this week's questions show, I explain what would happen if scientists discovered an existential threat to humanity. Would they let us know, or keep it secret to avoid a panic? Could we detect a Breakthrough Starshot fleet coming our way? And how well does China communicate its space exploration to the public?

00:00 Start

00:37 Would they tell us about the end of the world?

03:05 Is the Solar System normal?

05:38 Could we detect Breakthrough Starshots?

08:46 How well does China communicate to the public?

11:15 Could we use space junk for 3D printing?

14:02 What do I suggest for aspiring astrophysicists?

17:11 Will there ever be another Grand Tour?

19:47 What determines a planet's orbit?

22:08 Will Blue Origin pick up the pace?

25:02 What if aliens were pure energy?

28:14 Should there be more dark matter inside planets?

29:39 Would alien life be multicellular?

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

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Support Universe Today Podcast

In this week's questions and answer show, I explain how all the dust in space forms, could life be Von Neumann probes, why do people think black holes lead to another universe, and more...

00:00 Start

00:57 What is space dust?

05:14 Does the Kardashev scale make sense?

08:43 Could life on Earth be Von Neumann probes?

11:31 What should I point my telescope at?

14:23 Why do people think black holes go somewhere?

16:36 Why are we seeing so many asteroids?

19:36 If we can track space debris, shouldn't we be able to detect UFOs?

21:42 Would a warp drive be able to travel within the event horizon of a black hole?

22:59 Could we investigate the atmosphere of gas giants?

26:41 What's the first resource we'll mine off Earth?

29:05 How big is a galaxy?

30:42 Any benefit to stationing a telescope in the outer Solar System?

33:07 What will Space Force accomplish?

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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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

In this week's Q&A, I try to imagine what might happen if a microscopic black hole passed through the Earth. How long will James Webb take to become operational, and what will be the Plan B for James Webb if it fails?

00:00 Start

00:46 What if a microscopic black hole passed through the Earth?

05:25 When will James Webb come online?

06:38 What's plan B for James Webb if it fails?

09:16 Do Oort Clouds overlap?

11:29 Could there be a Tatooine out there?

13:50 Does China plan to colonize Mars?

16:22 Does the US take China's space exploration seriously?

19:50 Are there dark matter planets, suns and people?

22:11 What will the US government disclosure tell us?

25:45 Should I get an astronomy degree?

30:19 Shouldn't there be more black holes at the center of the Milky Way?

32:03 Have we measured the speed of gravity?

33:13 Will AI explore the Universe without us?

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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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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iTunes: https://podcasts.apple.com/ca/podcast/astronomy-cast/id191636169?mt=2

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Support Universe Today Podcast

I'm pleased to welcome back Dr. Casey Handmer, a software systems architect at NASA's Jet Propulsion Laboratory. In addition to his work at NASA, Casey has a fascinating blog where he considers the future of human and robotic space exploration:

https://caseyhandmer.wordpress.com/

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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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Support Universe Today Podcast

In this week's episode, I talk about the various ways we measure the age of the Universe. What's next for OSIRIS-REx? And what are the next frontiers for gravitational wave astronomy?

00:00 Start

00:41 How do we calculate the age of the Universe?

04:32 Will the planets migrate again?

06:36 What's next for OSIRIX-REx?

07:47 What's next for gravitational wave astronomy?

11:27 Does the habitable zone shift as the Sun heats up?

12:59 Will future civilizations know about the Big Bang?

18:17 Could a powerful telescope look beyond the CMB?

20:27 Could a computer become a planet-sized mind?

24:08 Is the CMB shifting away from us?

25:28 Bounties to remove space junk?

30:58 Could rockets be launched from Canada?

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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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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iTunes: https://podcasts.apple.com/ca/podcast/astronomy-cast/id191636169?mt=2

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Support Universe Today Podcast

My guest is Dr. Ken Olum, a research professor at Tufts University. His primary research is into cosmic strings, and how they could be detectable through techniques like gravitational waves.

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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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Support Universe Today Podcast

My guest is Dr. Michael H. Hecht, a research scientist and associate director at MIT's Haystack Observatory. Hecht is also the principal investigator for the Mars Oxygen ISRU Experiment onboard Perseverance:

https://www.haystack.mit.edu/researcher/mike-hecht/

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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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In this week's questions show, I consider what the night sky might look like if you could stand at the center of the Milky Way where the stars are denser. Do all stars have Oort clouds? And could Starship really send humans to Mars for the price of a house?

00:00 Start

00:50 What would the sky look like at the center of the Milky Way?

04:05 Will the Neutron be competitive?

07:40 Do all stars have Oort Clouds?

09:59 Would it be realistic to send humans to Mars for the price of a house?

11:38 Next cool space mission I'm excited about?

13:20 Do I think there's microbial life in the Universe?

16:48 How far away was the Big Bang?

19:26 Why was L2 chosen for JWST?

21:52 Does SpaceX need NASA?

25:11 Would Starlinks be brighter if they were lower?

28:21 Multiple nukes to destroy an asteroid?

30:21 Could we make a telescope the size of Earth's orbit?

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

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In this special interview, I was fortunate to speak with Dr. Ronald Mallet, an emeritus professor at UConn. In addition to a lifetime's work in cosmology and astrophysics, Mallet has been trying to work out how our understanding of Einstein's theories of General Relativity might lead to a practical form of time travel.

https://physics.uconn.edu/person/ronald-mallett/

This interview was part of the Weekly Space Hangout for May 5th, 2021. You can watch the whole episode here:

https://www.youtube.com/watch?v=iBwEAKA2ylw&t=2s

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

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In this week's questions show, I explain why we'd be able to recognize aliens, even if they were vastly more technologically advanced than us. Why I don't do any promotional ads on my videos, and if we have any examples of energy turning into matter.

00:00 Start

01:09 Can we actually recognize aliens?

04:18 Why don't I have sponsors?

06:33 Could we detect light pollution?

08:36 Can energy turn into matter?

10:18 How do we measure the age of the solar system?

12:52 What other prototypes will we need for Mars?

16:26 Can we extend the life of the Sun?

21:10 Is it time to map Mars?

23:43 Are there ultraviolet telescopes?

25:43 What would Starship be used for?

28:01 Can we match velocity with other stars?

29:50 Do we know the rate of the Universe's expansion?

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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Support Universe Today Podcast

Support Universe Today Podcast

My guest is Dr. Rebecca K. Leane, an astroparticle physicist with the SLAC National Accelerator Laboratory. The work involves innovative ways to detect dark matter.

http://rebeccaleane.com/

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Support Universe Today Podcast

My guest is Dr. Jessie Christiansen, an astrophysicist with NASA's Exoplanet Science Institute. Jessie will give us an update on TESS and the 2,200 planets it's discovered so far.

http://web.ipac.caltech.edu/staff/christia/

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Support Universe Today Podcast

In this week's questions show, I explain whether or not gravity is infinite, will we need to cure cancer to go to space? Will SpaceX help Artemis' chances for landing humans on Mars in 2024, and more...

00:00 Start

00:54 Is gravity infinite?

02:33 How deep does lunar regolith go?

04:09 Could nearby star systems contain planets that we don't know about?

06:59 Will dust diminish Ingenuity's performance?

10:14 Difference between micro-gravity and zero-gravity?

11:57 Will the Russians abandon the ISS?

14:57 Shouldn't the expansion of space be greater than gravity?

17:00 Biggest exoplanet we could live on?

19:42 What's happening with MOXIE?

22:00 Will we need to cure cancer for space exploration?

24:52 Why are there no privately funded missions?

27:01 What are astronauts "big questions"?

29:37 Could there be a balloon habitat on gas giants?

33:01 How will we produce power on Mars?

35:24 Does SpaceX improve Artemis chances for landing in 2024?

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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Support Universe Today Podcast

In this week's questions show I explain why we could be first in the Universe, do galaxies flip or spin, did I pick a good career? And more.

00:00 Start

00:47 Are we first in the Universe?

03:01 Do galaxies flip end over end?

04:28 Bro, get a better career

06:46 How much longer can SLS going?

10:33 Did I watch Ingenuity fly?

12:08 Am I looking forward to the movie version of the Three-Body Problem?

13:42 Does it make sense to try and watch a rocket launch?

16:32 Could we build space elevator on Mars.

18:38 What one mystery about space would I like to know?

21:00 Why don't we take the low gravity on Mars seriously?

24:47 What astronomy career is good if you're bad at math?

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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Support Universe Today Podcast

My guest is Mick West, a game developer and writer. Mick has been studying UFO claims and contrail conspiracy theories for many years and has a useful toolkit to help identify unidentified objects in the sky.

https://www.youtube.com/channel/UCF3UCTZiVg9wrIEzO7Om6jw

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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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Support Universe Today Podcast

My guest is Dr. Klaus Pontoppidan, an astronomer and project scientist working with the James Webb Space Telescope. Klaus is on the committee that helped choose targets that the telescope will be studying once it flys (and it will).

https://www.stsci.edu/~pontoppi/

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My guest is astronomer and science communicator Dr. Maggie Lieu. Lieu is a research fellow of machine learning and cosmology at the University of Nottingham and has been working on the upcoming Euclid space mission to help in the search for Dark Energy.

https://maggielieu.com/

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In this week's questions show, I explain why a heat-powered rover wouldn't work on Venus. I explain how spacecraft navigate, and wonder what James Webb's Deep Field survey will look like.

00:00 Start

00:54 Could the heat on Venus power a rover?

03:53 What if Ingenuity tips over?

05:42 How do spacecraft navigate?

08:36 Are SpaceX workers being prepared to work on the Moon or Mars?

10:46 How would James Webb's deep field look?

12:52 Any more flybys for New Horizons?

14:03 Will human or a sample return from Mars come first?

16:58 Why are intermediate mass black holes important?

18:42 What's the case against Mars colonization?

23:28 What are my favorite space missions?

26:57 Does a black hole form instantly?

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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You might know Dr. Sutter as a science communicator, but his doctorate is actually in particle physics. Paul is going to join me to talk about the Muon g-2 experiment and what it means for the Standard Model of physics. We'll probably also talk about the end of the EmDrive and other topics in space and astronomy.

http://www.pmsutter.com/

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Professor Geraint Lewis is an astrophysicist focused on dark energy, gravitational lensing and galactic merger. He has recently published a paper that that investigates the nature of the anthropic principle, how the Universe needs observers.

https://www.geraintflewis.com/

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Dr. Michio Kaku is a theoretical physicist and science communicator. His new book is called the God Equation, which traces the quest for a single theory of everything that will unite quantum mechanics and the theory of gravity.

https://mkaku.org/home/

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Support Universe Today Podcast

In this week's questions show, I look at the rotation rate of pulsars, why NASA is such a fan of the term in-situ and what our plans are for exploring the Universe.

00:00 Start

00:49 Do pulsars ever slow down?

03:20 What's with in-situ?

05:17 Europa or Enceladus?

07:42 How far could Starships go?

09:27 Can planets be in orbital resonance?

10:44 Would fusion work for space travel?

12:46 What are the plans for colonising the universe?

14:26 How soon until we can starhop to another star?

16:17 Why isn't there an improvement to the Drake Equation?

19:28 Why don't we use nuclear rockets?

23:48 Could we use binoculars to see the night sky?

26:35 How close are stars in a cluster?

27:57 Best way to terraform Mars?

30:18 Why not use wiper blades on the Mars rover solar panels?

33:19 Is there bacteria on the Voyagers?

36:01 Is dark matter a fact now?

40:11 Is there confirmation bias in the science community?

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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Support Universe Today Podcast

Professor Avi Loeb is a theoretical physicist from Harvard who has worked on many advances in space and astrophysics. He helped predict exoplanet discoveries using microlensing, worked on the mathematics for the Event Horizon Telescope, and has many fascinating opinions about the search for extraterrestrials.

https://lweb.cfa.harvard.edu/~loeb/

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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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Support Universe Today Podcast

My guest is Dr. James Davenport, a research assistant professor at the University of Washington. In addition to his research into magnetically active stars, James focuses on large-scale, time-domain astronomy.

He's also a prolific communicator here on YouTube, breaking down complicated scientific topics and documenting astronomy meetings for the general public.

https://www.youtube.com/channel/UCg6zx6fQG_Xo639TIjwJSZA

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In this week's questions show, I tackle some challenging questions, like the ethics of sending humans to Mars, and whether it's better to focus on our efforts on Earth or on space exploration. Should we welcome a Carrington Event? Are there any serious competitors to SpaceX in the market right now?

00:00 Start

00:49 Is it ethical to send people to Mars?

04:01 Welcoming a Carrington Event?

07:07 Is Starship legitimate?

12:09 Should we spend money on space or Earth?

16:36 Is there a limit to gravitational assists?

19:46 Is there a use for small space telescopes?

22:04 Could something stand completely still?

23:24 Are there any serious contenders to SpaceX?

25:49 Will Mars have more asteroid strikes?

27:14 Will the Lunar Gateway be important?

30:58 Is it frustrating for mission name changes?

32:22 Could we ever accelerate at 1g?

33:33 Why do stars weigh so much?

35:11 Is something past the Great Attractor?

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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In this week's questions show, I talk about the stars we can see with our own eyes. Are they special? How long does it take solar flares to reach Earth? How will crimes on Mars be prosecuted?

00:00 Start

00:39 What types of stars can we see?

02:07 How long does it take for a solar flare to reach us?

04:19 Will I watch Foundation?

05:39 Crimes on Mars?

08:31 How will future spaceships slow down?

11:06 End of the Earth conspiracy theories

14:22 Will today's children live long enough to see interstellar flight?

16:41 Is an Earth-Mars cycler feasible?

19:13 Should we build a giant telescope on the Moon?

22:27 What does space look like, from space?

25:13 Could we see 4th dimensional beings?

28:04 What elements are in the solar winds?

28:48 Will Starship have to launch from the ocean?

31:05 Are there stars forming right now?

33:43 Should we land on Mercury?

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/

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Support Universe Today Podcast

In this week's questions show, I answer questions about supernovae, how we could terraform the Moon, and why is Starlink so expensive?

00:00 Start

00:55 When is the next Star Party?

06:21 When will we have better images of exoplanets?

09:25 Am I afraid of another Carrington Event?

13:03 How do astronomers book telescopes?

16:33 Can giant stars have smaller stars orbiting them?

19:31 Have I seen Space Sweepers?

20:17 Could we give the Moon an atmosphere?

21:48 Why not go to Ganymede?

23:53 How many times will SpaceX use boosters?

26:19 Is there still volcanism on Mars?

30:29 How will we measure age in the Universe?

33:46 Do I watch K-Dramas?

37:05 Why do supernovae leave different remnants?

40:30 Babylon 5 vs DS9

42:13 Why is Starlink so expensive?

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/

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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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This week I talk to Dr. Jack Burns, the Principle Investigator for the Lunar FARSIDE telescope. This would be a radio telescope installed on the far side of the Moon that would be capable of observing the first stars and black holes during the Dark Ages and Epoch of Reionization.

https://www.colorado.edu/project/lunar-farside/dr-jack-burns

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Today I'm interviewing Dr. Benjamin Zuckerman, emeritus professor from UCLA. Zuckerman is the author of over 200 papers, and was involved with the first direct imaging of a multi-planetary system.

http://astro.ucla.edu/personnel/benjamin-zuckerman

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In this week's questions show, I talk about how dark matter seems to clump differently from regular matter. When will Starships stop exploding? And what do I think about the Stellina telescope?

Image credit: Everyday Astronaut

https://www.youtube.com/channel/UC6uKrU_WqJ1R2HMTY3LIx5Q

00:00 Start

00:36 Does dark matter clump?

05:35 When will Starships stop exploding?

10:33 What do I think about the Stellina telescope?

14:44 Do I think there's a bias against searching for life?

19:27 What will the far future of the Universe look like?

22:48 Where is the edge of space?

23:55 Do I recommend Babylon 5?

25:20 What about Battlestar Galactica?

26:17 Would I take a trip around the Moon?

29:19 What if a black hole met a white hole?

29:55 What's the state of James Webb?

31:18 What if Venus had a moon?

34:20 Is there a solution for Starship's legs?

37:55 Will Artemis prove we went to the Moon?

40:20 Could we build the Enterprise today?

44:07 Could we crowdfund space missions?

47:20 Will ping times doom interplanetary gameplay?

48:26 How do black holes have gravity?

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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Support Universe Today Podcast

This week I talk to Christopher Morrison from USNC about their recently awarded NIAC Grant. Their grant will investigate the feasibility of a radioisotope-electric propelled spacecraft that could intercept and retrieve a sample from a future interstellar asteroid or comet.

You can learn more about it here:

https://www.nasa.gov/directorates/spacetech/niac/2021_Phase_I/Extrasolar_Object_Interceptor_and_Sample_Return/

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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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Support Universe Today Podcast

In this week's live questions show, we spend a lot of time talking about the Perseverance landing on Mars. What's happening with my content right now, and is anyone watching the Moon for meteorite impacts?

00:00 Start

00:15 What was the best part of the Perseverance landing?

03:28 Why is the data transfer to Mars so good?

05:43 How do you test AI to work remotely on Mars?

07:56 How did they decelerate the rover?

09:20 Is there a microphone on the rover?

11:10 When will ESA's rover going?

14:37 Have Mars rovers photographed Earth?

15:15 Could Breakthrough Starshot send spacecraft to Mars?

17:44 Does the spacecraft move faster after a cargo delivery?

19:26 Do we watch for asteroids hitting the Moon?

21:14 What do I think of Babylon 5?

23:03 Is more content planned?

28:42 Will we visit nebulae in the future?

32:36 When will I shoot outside again?

34:57 Do I think the government is hiding evidence of aliens?

36:49 What are the limits of our technology?

40:35 Why sterilize spacecraft going to other worlds?

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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Support Universe Today Podcast

In this week's questions show, I talk about why some missions go into orbit, and other missions make a direct landing on Mars. Is it a good idea for the SpaceX Falcon Heavy to launch components for the Lunar Gateway? And how can we know if the Universe is finite or infinite?

00:00 Start

00:30 Why go into orbit when NASA goes straight for landing?

04:19 What about SpaceX launching the Lunar Gateway?

08:45 Is the Universe finite or infinite?

11:52 Would a big black hole event horizon look flat?

12:38 If I had $50 billion to spend on space

16:14 Do I own any space stocks?

18:04 Will there be a time when we can't see other galaxies?

21:24 Is it easier or harder to fly to the Moon now?

25:09 When will the first steps be on Mars?

30:58 Would a Moon city protect humanity?

35:46 Could we crash Mars into Pluto?

36:54 Will travel to the Moon/Mars ever be cheap?

39:24 Should we be improving Earth or Mars?

41:06 Which book series do I recommend people read first?

42:13 Will Perseverance hear the helicopter?

44:07 What technologies will improve the Earth in the future?

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Support Universe Today Podcast

00:00 Start

00:22 Easier to find life in the Solar System or Milky Way?

05:13 Could an exosuit simulate gravity?

06:36 Could you use water as a propulsion system?

08:28 Could you have space-based interferometry?

13:02 Are the moons of Jupiter in severe radiation?

14:19 Is anyone working on spinning habitats?

18:05 What about Amazon's satellite constellations?

22:19 Can you have rogue planets without a star?

25:52 How do you stop a lightsail?

27:22 How far will James Webb see?

31:35 Could gravitational lensing mess up the CMB?

34:27 Will the Titan Dragonfly visit the seas?

37:29 What's my astrophotography setup?

38:55 What type of radiation is around Jupiter?

39:53 Is Blue Origin a serious competitor to SpaceX?

44:22 What telescopes do I have?

44:47 If Earth was locked to the Sun, what would happen to the gravity?

45:23 Will there be a telescope on the Moon?

46:17 Would we know where a WoW signal is coming from?

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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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Support Universe Today Podcast

This week I interview Chris Prophet, the author of "SpaceX from the Ground Up". His book, now in its 6th edition covers the story of SpaceX, from its initial concept to the latest Starship tests.

https://www.amazon.com/SpaceX-Ground-Up-Chris-Prophet-ebook/dp/B01CUUUZZ2

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Support Universe Today Podcast

In this week's Q&A show, I answer questions about Starship might be able to provide artificial gravity, whether I'd prefer to have LUVOIR or the Overwhelmingly Large Telescope, and if nuclear-powered rockets will work in space.

You can join me live every Monday on my YouTube channel at 5pm Pacific Time to ask your questions live.

00:00 Start

00:18 Could Starships provide artificial gravity?

03:51 LUVOIR or the Overwhelmingly Large Telescope?

05:30 Are nuclear-powered rockets feasible?

09:08 What do I think about Avi Loeb's theory about Oumuamua aliens?

14:49 What happened with Starship's SN9 test?

16:19 Let's learn more about the Universe Today writing team

19:15 Learning the constellations

23:00 Can spacecraft survive interstellar space?

25:13 What if the Earth had no Moon?

27:52 Why are all craters circular?

30:09 Will humans be able to survive in the Solar System?

33:01 Will there be a limit to orbital refueling?

36:58 Did the Sun have a binary partner?

39:08 Is life more likely on K-type 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.

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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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In this week's interview, I talk to David Brown about his new book: The Mission. It's all about the campaign to design and build the Europa Clipper mission and everything that happened behind-the-scenes.

David is a science journalist and writer with with work in the Atlantic, New York Times, Scientific American and more.

https://www.dwb.io/

https://www.harpercollins.com/products/the-mission-david-w-brown?variant=32126580064290

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In this week's QA, I talk about what's driving the expansion of the Universe, how big the observable Universe is to the actual Universe, and what will happen to dogs in gravity.

00:00 Start

00:26 What's driving the expansion of the Universe?

04:01 How big is the observable Universe compared to the actual Universe?

07:25 Do people watch videos or listen to my podcasts?

10:37 Will dogs enjoy lunar gravity?

12:59 Why aren't we looking deeper in the Kuiper Belt?

15:54 What would be some good ways to explore lava tubes?

19:36 What happened to the Overwhelmingly Large Telescope?

22:48 Would space LIGO be more sensitive?

27:56 What's the most like Great Filter?

31:07 Why do we talk about distance in form of time?

35:14 Any future collaborations with Isaac Arthur?

35:58 How long will the Mars helicopter survive?

40:07 When will NASA incorporate Starship into its plans?

42:15 How dangerous is the Kessler Syndrome?

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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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10 billion years ago, galaxies of the Universe were ablaze with the light of newly forming stars. This epic phase of history is known as “Cosmic Noon” - the height of all star creation. Galaxies like our Milky Way aren’t creating stars at nearly the rates they were in the ancient past. However, there is a time when galaxies in the present can explode with star formation – when they collide with each other. This recently published collage of merging galaxies by the Hubble HiPEEC survey (Hubble imaging Probe of Extreme Environments and Clusters) highlights six of these collisions which help us understand star formation in the early Universe.

Support Universe Today Podcast

In this week's interview, I talk with Devin Carroll, a robotics Ph.D. student at the modular robotics lab at the University of Pennsylvania. Devin is working on robots that can build their own structure out of ice.

https://www.modlabupenn.org/people/devin-carroll/

https://www.youtube.com/watch?v=kjfDRQWv0x0

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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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In this week's live Q&A, I talk about the new Space Launch System hot-fire test, how Breakthrough Starshot spacecraft might be able to communicate with home, and what messages would we send to aliens that we might never be able to reach physically.

00:00 Start

02:11 How would Starship chipsats communicate with Earth?

05:00 How far can we ever explore into the Universe?

06:31 Why was the SLS test so short?

08:59 This is why we test.

09:52 What message would we send to aliens we could never visit?

13:52 Is anyone working on a practical artificial gravity?

18:32 Do we know which stars can see Earth transiting?

21:11 How do spacecraft change their trajectories?

23:50 When will LUVOIR launch?

26:24 Why is there a solar cycle?

29:51 Will AI start answering science questions?

32:53 Is a generation ship or seed ship better?

35:25 Are gravitational lenses like telescope lenses?

36:46 Will we hit light speed or wormholes first?

37:49 How prepared are we for a Carrington Event?

40:48 Can we predict gamma ray bursts?

45:52 What are my news sources?

48:41 Do I think there's non-intelligent life out there?

52:56 Would a Europa lander see any life in the surface?

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

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Support Universe Today Podcast

Welcome to the new style Q&As, which we're now recording every Monday live on my YouTube channel at 5pm Pacific Time. This week we got a lot of great questions about the Proxima Centauri signal, the Fermi Paradox, and Breakthrough Starshot.

00:00:00 Start

00:00:14 Is Starlink portable?

00:01:07 Any thoughts on the Wow signal?

00:03:58 What are magnetars?

00:06:20 Any followup planned on Proxima signal?

00:07:34 My answer to the Fermi Paradox

00:11:50 Why don't neutron stars turn into black holes?

00:13:03 Could Breakthrough Starshot confirm the Oort Cloud?

00:15:07 Can Breaththrough Starshot slow down?

00:20:03 Do other planets have pole stars?

00:20:45 Should we put a telescope out by Neptune or Uranus?

00:23:15 Next rare celestial event

00:26:12 Does Skylon have a future in space exploration?

00:30:35 How will humanity end?

00:33:47 Is Elon Musk a supervillain?

00:35:16 When can regular people do space tourism?

00:38:12 Am I up to date on the Expanse?

00:39:51 SG1 or the Expanse?

00:41:37 Does everything experience gravitational lensing?

00:44:07 What do I think of DALL-E?

00:47:18 Doing space journalism for 21 years

00:48:39 Space assembly of telescopes.

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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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Support Universe Today Podcast

In this week's interview, I talk with Chris Carr, one of the co-hosts in the Weekly Space Hangout. Chris is a grad student at Columbia University, specializing in the cosmos inside and outside the Milky Way.

http://www.astro.columbia.edu/profile?uid=chris

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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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Support Universe Today Podcast