Universe Today Podcast

In this week's questions show, I've got another expert guest answerer. Space News reporter and Space Review editor Jeff Foust answers your tricky spaceflight questions. Could we attach telescopes to Starlinks? What impact will these megaconstellations have on astronomy? What can humans do that robots can't? And more...Check out Jeff's work at:https://spacenews.com/https://www.thespacereview.com/00:30 Could there be airtight caves on Mars containing atmosphere?01:26 Why would we actually want to go to Mars?02:30 Could we attach telescopes to Starlinks?03:17 Could we do gravity experiments with animals on Earth?04:34 Has anyone tried to do surgery in space?05:20 What can humans do in space that robots can't?06:16 How will Starlink impact astronomy?07:42 How will megaconstellations affect launches?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://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

Thanks to our good friends at Oceanside Photo and Telescope, our livestreaming telescope is back online. I featured a couple of quick pics I took with the telescope during a test stream on Twitch Sunday night.I also answered questions about our trip to the AAS in Hawaii, if it's possible to make a more powerful telescope out of smaller telescopes, and why the ISS doesn't have an artificial magnetosphere.02:20 New pictures from the telescope04:30 American Astronomical Society meeting in Hawaii07:45 Can we make a big telescope out of smaller telescopes?11:59 Why don't we make a magnetic field around ISS?14:10 Why hasn't TESS found many planets?17:20 Has my opinion on the Fermi Paradox changed?20:10 How do Type 1a supernovae form?22:18 Can New Horizons flyby more objects?23:50 How can we detect life if we're seeing the past?26:19 Any plans for next generation of Hubble?29:08 Any cool new images at AAS?31:05 What about Origins?31:44 Did I read many posters?35:59 Are we the first civilization?37:44 Next decadal survey?39:00 How can evidence of civilization disappear?41:35 Does the Solar System have too many planets?43:55 Should humanity spread life into the Universe?45:38 Interesting conversations at AAS?49:07 Why focus on Mars?51:20 Shouldn't we focus on asteroid defense?53:04 Does Starlink increase the odds of a Kessler Syndrome?Want to see the experiments, join me at:https://www.twitch.tv/fcainOur 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=2RSS: https://www.universetoday.com/audioWhat Fraser's Watching Playlist:https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1GWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

Once again, at the AAS Meeting in Hawaii, I got a chance to sit down with another astronomer to talk about their research. This time it was Dr. David Kipping from Columbia University's Cool World's Lab. We talked about how easy it'll be for aliens to know our planet is inhabited, and some ways we might be able to hide the evidence of our existence.Check out Cool Worlds:https://www.youtube.com/channel/UCGHZpIpAWJQ-Jy_CeCdXhMAFollow David on Twitter:https://twitter.com/david_kippingOur 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=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

At the American Astronomical Society's meeting Honolulu I got a chance to talk with Adam Frank about new research he's worked with Caleb Scharf, Jonathan Carroll-Nellenback and Jason Wright about the Fermi Paradox. They calculated how difficult it would be for aliens traveling at 10% the speed of light to settle the entire Milky Way, and it turns out, it's not as simple as you might think.Visit Adam Frank's website:https://www.adamfrankscience.com/Read the article at Scientific American here:https://blogs.scientificamerican.com/life-unbounded/galactic-extremism/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=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

In this week's Open Space QA, I respond to complaints about my Betelgeuse video, wonder about alien civilizations stuck in heavy gravity, and consider whether we could terraform Earth to make it better.03:30 Betelgeuse video comments08:30 Can gravitational waves travel at the speed of light11:45 Can we terraform Earth to a better place?13:38 Could there be civilizations stuck in heavy G?15:39 Artemis or capture a NEO?18:12 Could other planets have oil?19:17 Is math universal?21:38 What am I reading?23:47 What kinds of pictures will James Webb take?24:55 When humans walk on Mars?27:04 Why don't I get older?27:42 How many satellite constellations will there be?28:44 Collecting questions31:00 How can satellite internet compete?31:35 Will James Webb be extra fragile?32:20 Stream Rimworld?33:11 How do you find sanity considering the infinite Universe35:25 Should we care about the Universe that we can't see?37:07 Disappearing stars?37:30 Can we agree on the Hubble constant yet?37:55 Speed of magnetism38:23 First destination with a FTL spaceship39:52 Do black holes run out of energy?40:45 Do black holes eat spacetime?41:50 How important are plate tectonics for life?43:00 Is there a limit to satellite constellations?45:10 Why don't you answer my questions?45:52 Biggest threat from space?48:13 Will Starlink be a problem for astronomers50:00 String Theory, science or philosophy?51:45 Simulation hypothesis, science or philosophy?51:16 Which telescope to buy?55:45 When will there be independent settlements in space?56:45 How to protect astronauts inside Orion?57:52 How long is a supernova dangerous?58:21 What did I think of Consider Phlebas?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=2RSS: https://www.universetoday.com/audioWhat Fraser's Watching Playlist:https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1GWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

This week's questions show was recorded at the 235th Meeting of the American Astronomical Society in Honolulu, Hawaii. I was lucky enough to have 3,500 astronomers, space scientists and others to talk with. Ethan Siegel from "Starts with a Bang" is back, and this time he's answering your questions about space and astronomy.Visit his blog here:https://www.forbes.com/sites/startswithabang/#5bfca02e2c5eFollow Ethan on Twitter:https://twitter.com/StartsWithABangWant 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://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

In this week's questions show I explain how we'll ever study 100 million planets, what's the business case for space exploration, and how I pull the questions together for these shows.00:42 Can we ever study all the planets?03:33 Return on investment from space exploration?03:35 Will we become a post-scarcity economy?05:59 Why not a better Mars simulation?08:16 How do I manage the QAs? 10:10 What will low gravity do to humans?12:04 Private industry will explore space?14:17 Where will power on Mars come from?16:18 Expanse, Season 4!17:54 How would the skies look on Mars?18:47 Who gets the resources of a planet?21:05 Are smaller content creators getting squeezed?23:16 Is 100 million exoplanets just a guess?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://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

Over the last weekend, astronomy Twitter started noting that the red giant Betelgeuse, the prominent shoulder of Orion was looking visibly dimmer in the sky, and I had a few people reach out to me and ask me if it was really happening and if I knew what was going on.This is exciting, of course, because Betelgeuse is living on borrowed time, and it could explode as a supernova any day now. Or, it might not detonate for another 100,000 years. We just don’t know.What’s Betelgeuse up to? Is this a sign that it’s about to explode? And what would it mean if it did?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=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at https://www.patreon.com/universetodayMore stories at https://www.universetoday.com/Twitch: https://twitch.tv/fcainTwitter: @universetodayFacebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comReferences:https://twitter.com/starstrickenSF/status/1209207523179237376https://medium.com/starts-with-a-bang/what-will-happen-when-betelgeuse-explodes-df5b04164b2https://www.eso.org/public/usa/images/potw1726b/https://hubblesite.org/image/4027/galleryhttps://www.eso.org/public/images/eso0708a/http://www.astronomerstelegram.org/?read=13341https://solarscience.msfc.nasa.gov/feature1.shtmlhttps://twitter.com/starstrickenSF/status/1209242710281986048https://www.astro.princeton.edu/~gk/A403/pulse.pdfhttps://arxiv.org/pdf/1712.01852.pdfhttps://aasnova.org/2018/01/03/astrophysics-of-red-supergiants/https://neutrinos.fnal.gov/sources/supernova-neutrinos/https://snews.bnl.gov/https://researchblog.duke.edu/2014/01/22/supernova-explosion-in-m82-exciting-but-no-neutrinos/https://aasnova.org/2018/04/20/capturing-neutrinos-from-a-stars-final-hours/https://www.phys.hawaii.edu/~jgl/nuastron.htmlSupport Universe Today Podcast

This week I'm joined by Andrew Rader, a game designer and mission manager at SpaceX. Andrew's new book is called Beyond the Known and it's all about the history and future of space exploration.Learn more about Andrew here:https://andrew-rader.com/And learn about his book here:https://www.simonandschuster.com/books/Beyond-the-Known/Andrew-Rader/9781982123536Our 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=2RSS: https://www.universetoday.com/audioWhat Fraser's Watching Playlist:https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1GWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at: https://www.patreon.com/universetodayMore stories at: https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: @universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comSupport Universe Today Podcast

As I’m recording this video near the end of 2019, the total number of confirmed exoplanets stands at 4,104. We’ve come a long way since the discovery of the first exoplanet orbiting a sunlike star back in 1995 with 51 Pegasi b.And the reality is that the race to find new exoplanets is only accelerating. New ground and space-based telescopes are turning up planetary candidates at an increasing rate. New techniques will find planets in entirely new ways. The bottom line is that over the next few decades, this mere 4000ish will multiply by orders of magnitude.So let’s run the clock forward and try to calculate what the future holds for exoplanets. How many worlds will we know about 3 decades from now, in the year 2050?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=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at https://www.patreon.com/universetodayMore stories at https://www.universetoday.com/Twitch: https://twitch.tv/fcainTwitter: @universetodayFacebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / frasercain@gmail.comKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - weber.chad@gmail.comReferences:https://arxiv.org/pdf/1911.12114.pdfhttps://www.investopedia.com/terms/m/mooreslaw.asphttp://exoplanet.eu/catalog/51_peg_b/https://sci.esa.int/web/plato/-/42276-summaryhttps://www.eso.org/sci/facilities/eelt/https://www.jpl.nasa.gov/habex/https://ui.adsabs.harvard.edu/abs/2013A%26A...556A.133S/abstracthttps://sci.esa.int/web/gaia/-/58788-detecting-exoplanets-with-astrometryhttps://arxiv.org/pdf/1707.01348.pdfSupport Universe Today Podcast