Episode 586: Q&A 105: Why Not Send Earth Life to Europa? And More... Featuring Back to Space

In this week's questions show, I tackle questions about seeding Europa with hardy Earth life, what makes galaxies spin, what are we competing with aliens for, and why is it so hard for second stages of rockets to land? Subscribe to Back to Space https://www.youtube.com/channel/UCHZ63YtVtdQDqLxKyTDmtmw 01:46 Why not take Earth life to Europa? 04:00 What if the aliens are aligned to Planet 9? 06:09 What makes a galaxy spin? 07:22 What are we competing with aliens for? 09:39 Are we constantly reusing atmosphere on ISS? 11:33 Should we settle ice worlds? 13:52 Why can't second stages be landed? 17:03 Does Sag A* spin the same way as the Milky Way? 20:22 Is the search for life in space a waste of time? 21:59 Could asteroid mining change their orbits? 23:51 Would SpaceX send NASA astronauts to Mars? 24:25 How much fuel does ISS need? 25:01 What kind of training do astronauts get? 25:52 What is Max Q? 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=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