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Episode 582: Q&A 104: Should We Reconsider The Definition Of A Moon? And More...

Episode 582: Q&A 104: Should We Reconsider The Definition Of A Moon? And More...

24:022019-10-30

Om episode

In this week's questions show, I explain why it's probably not time to reconsider the definition of a moon, if we could make artificial gravity with a chunk of a neutron star, and why a supermassive black hole isn't the anchor for an entire galaxy. 00:47 Should we reconsider the definition of a moon? 03:35 Could we make artificial gravity with mass? 05:48 Why didn't the Big Bang collapse back into black hole? 07:47 Why can't a black hole be the anchor of the galaxy? 10:45 How far and how small can we see? 13:37 What is left after a black hole evaporates? 15:00 Could you have a star made out of something else? 16:32 Could a planet orbit a binary star? 18:29 Could aliens Planet 9? 19:24 If aliens are advanced, we're no threat 21:35 How can aliens not exist? 22:30 Why don't they put a microscope in a rover? 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

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Podme arbeider etter Vær Varsom-plakatens regler for god presseskikk. Ansvarlig redaktør og daglig leder er Kristin Ward Heimdal. Redaktør for eksterne innholdssamarbeid er Mathias Thaulow Lisberg.

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