Universe Today Podcast

How old is the Universe? In order to figure that out, all you have to do is figure out how quickly it’s expanding, and then the clock backward until everything is crunched together.And astronomers have measured the rate that the Universe is expanding with tremendous precision at various times in its history; at the beginning, and much more recently. The problem is, these expansion rates disagree, but they’ve both been measured so accurately that their error bars don’t overlap.In other words, there are multiple, highly accurate estimates for the age of the Universe, and they disagree.Check out Paul's channel at:https://www.youtube.com/channel/UCBr7XOxxQyBHEwqkhoci7vwOur 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.comSupport Universe Today Podcast

In this week's questions show, I explain why I don't think we always need to be realistic, if galaxies in the local group are bound together gravitationally, and what we should call Earth-moving equipment on Mars.00:20 Be realistic.04:24 Are galaxies in the local group bound?05:56 Will gravitational waves give us advanced notice of collisions?08:36 Will we ever be able to live outside on Mars?10:16 Are we going to ruin Mars too?12:42 Mars-moving equipment?14:07 Could the Moon have an atmosphere?15:51 Liquid water on the surface of Mars16:49 Is there a business case for Mars?19:17 What about nitrogen?21:21 What will need to come from Earth?23:06 Are there planets with less gravity than Earth?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

Extending humanity to other worlds in the Solar System is at the very limits of our modern technology. And unless there are dramatic discoveries in new propulsion systems or we learn how to build everything out of carbon nanotubes, the future of space exploration is going to require living off the land.The technique is known as In-Situ Resource Utilization or ISRU, and it means supplying as much of your mission from local resources as possible.And many of our future exploration destinations, like Mars, have a lot to work with. Let’s look at the raw materials on Mars that missions can use to live off the land and the techniques and technologies that will need to be developed to make this possible.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://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20160005963.pdfhttps://space.nss.org/the-promise-of-mars-by-robert-zubrin/https://www.jpl.nasa.gov/news/news.php?feature=7038https://pubs.geoscienceworld.org/msa/ammin/article/103/7/1011/537180/gypsum-bassanite-and-anhydrite-at-gale-crater-marshttps://www.nasa.gov/image-feature/jarosite-in-the-noctis-labyrinthus-region-of-marshttp://fti.neep.wisc.edu/neep533/SPRING2004/lecture19.pdfhttps://www.nature.com/articles/ngeo1923https://www.researchgate.net/publication/242525435_Perchlorate_on_Mars_A_chemical_hazard_and_a_resource_for_humanshttps://mars.nasa.gov/news/curiosity-finds-evidence-of-mars-crust-contributing-to-atmosphere/https://mars.nasa.gov/resources/8200/boron-sodium-and-chlorine-in-mineral-vein-diyogha/https://www.jpl.nasa.gov/news/news.php?feature=6544https://mars.nasa.gov/mars-exploration/missions/viking-1-2/https://www.nasa.gov/jpl/msl/pia18387https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110015862.pdfhttps://phys.org/news/2019-04-methane-route-storage-renewable-energy.htmlhttps://pdfs.semanticscholar.org/9159/213d6ad79bd800d07525bc37463588742662.pdfhttps://www.icis.com/explore/resources/news/2007/11/05/9075777/ethylene-uses-and-market-datahttps://www.universetoday.com/144136/using-bacteria-to-build-a-base-on-mars/https://madeinspace.us/press-releases/made-in-space-wins-nasa-contract-to-develop-hybrid-metal-manufacturing-system-for-space-exploration/https://www.youtube.com/watch?v=5gfS5k8juDMhttps://www.nature.com/articles/s41598-017-01157-w??utm_medium=affiliate&utm_source=commission_junction&utm_campaign=3_nsn6445_deeplink_PID7596969&utm_content=deeplinkhttps://www.hou.usra.edu/meetings/lunarisru2019/presentations/5066_Mueller.pdfhttps://www.nasa.gov/directorates/spacetech/centennial_challenges/3DPHab/latest-updates-from-nasa-on-3d-printed-habitat-competitionSupport Universe Today Podcast

In this week's questions show, I explain why you could have a steam-powered rocket, how often spacecraft have crashed into asteroids and comets, and why a red supergiant star actually has a very low surface gravity.02:42 Could you build a steam-powered rocket?04:48 Have any probes crashed into asteroids or comets?06:47 Surface gravity of UY Scuti08:57 Will we ever send humans to the surface of Venus?11:08 Lol11:24 Does Venus have a magnetic field?12:22 Longer guest interviews?14:09 Save the shoutouts to the end15:55 Could a probe float at the surface of Venus?16:47 Where do I get my news?20:29 Why don't meteor showers hit satellites?21:57 Why not add a module to James Webb?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

The exploration of Venus has been mainly about getting down to the surface of the planet. The Soviet Union sacrificed lander after lander to discover just how extreme the conditions are down there on the ground.But higher up, among the clouds, the climate on Venus is surprisingly Earthlike in temperature and pressure, and there have been some fascinating ideas for robotic and human explorers to fly the skies of Venus, to help understand our evil twin planet.Let’s take a look at them.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://solarsystem.nasa.gov/planets/venus/in-depth/https://nssdc.gsfc.nasa.gov/planetary/factsheet/venusfact.htmlhttp://www.esa.int/Science_Exploration/Space_Science/Venus_Express/Acid_clouds_and_lightninghttps://solarsystem.nasa.gov/missions/magellan/in-depth/https://progearthplanetsci.springeropen.com/articles/10.1186/s40645-018-0181-xhttps://solarsystem.nasa.gov/resources/2197/aerial-platforms-for-the-scientific-exploration-of-venus/https://www.nasa.gov/vision/universe/solarsystem/venus-20070827.htmlhttps://trs.jpl.nasa.gov/bitstream/handle/2014/44535/13-5079_A1b.pdf?sequence=1https://unmanned-aerial.com/nasa-taps-black-swift-to-develop-uas-for-studying-venushttps://www.universetoday.com/144045/stingray-glider-to-explore-the-cloudtops-of-venus/https://www.lpi.usra.edu/vexag/meetings/STIM/presentations/Polidan_VAMP%20for%20STIM%20Meeting%20Jan%202013%20-%20Final%20Approved.pdfhttps://sacd.larc.nasa.gov/smab/havoc/Support Universe Today Podcast

This week I'm joined by Jason Derleth from NASA's Innovative Advanced Concepts (or NIAC). This is a special part of NASA that funds innovative ideas for new telescopes, propulsion systems and rovers. Many of the cool, science-fiction ideas I present on this channel come from research done at NASA.Jason is an aerospace engineer and tech analyst, and the Program Executive for NASA NIAC.Learn more about NIAC here:https://www.nasa.gov/directorates/spacetech/niac/index.htmlOur 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

In this week's questions show, I explain why we can see meteor showers every year, why we're not 3D printing telescopes in space, why there aren't any plans to launch telescopes with SpaceX Starship. And a lengthy answer to one of the most common James Webb questions we get: can it be refueled? This was answered by Paul Geithner, a Deputy Project Manager for James Webb during a recent livestream.01:00 Why do we see meteor showers every year?02:49 Why not also use 3D printing for space telescopes?04:40 Why don't they design telescopes for Starship?07:20 Could there be a privately backed telescope?09:54 Is there glass on the Moon to build telescopes?11:46 Could ISS help build new space telescopes?13:47 Space telescopes on the far side of the Moon?15:06 Is Andromeda actually much closer?16:27 Why spend money on science?19:20 Why is the dark side of the Moon illuminated?21:34 Can James Webb be refueled?Watch the full livestream here:https://www.youtube.com/watch?v=iX0iCqCTKzEWant 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/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

Today I was joined by Dr. Casey Handmer, an accomplished theoretical physicist who currently works at NASA's Jet Propulsion Lab. Casey has a fascinating blog where he considers current trends in space exploration and what the future holds. Learn more about Casey here:https://caseyhandmer.wordpress.com/We talked about the implications of SpaceX Starship, Starlink, why power beamed from space or asteroid mining will never turn a profit down here on Earth, and why he's not that scared about space radiation.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

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When it comes to telescopes, bigger is better. That’s true down here on Earth, and it’s especially true out in space. As astronomers and engineers design the next generation of giant space telescopes, they’re running up against the limits of current launch providers. There are only so many ways you can fold a huge telescope to get it to fit inside a 5-meter launch fairing.The upcoming James Webb Space Telescope is pretty much the very limit of what you can construct on Earth and put into space in a single launch. To go bigger, space agencies will need to consider assembling their next-generation space telescopes… in space.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.comReferences:https://hubblesite.org/mission-and-telescopehttp://herschel.cf.ac.uk/mission/launchhttps://exoplanets.nasa.gov/exep/technology/in-space-assembly/iSAT_study/https://www.nasa.gov/mission_pages/station/structure/elements/space-station-assemblyhttps://blogs.nasa.gov/spacex/2019/07/29/cargo-dragon-berthed-to-station/Support Universe Today Podcast