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

Published: Oct. 30, 2019, 6 p.m.

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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.

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00:47 Should we reconsider the definition of a moon?
\\n03:35 Could we make artificial gravity with mass?
\\n05:48 Why didn\'t the Big Bang collapse back into black hole?
\\n07:47 Why can\'t a black hole be the anchor of the galaxy?
\\n10:45 How far and how small can we see?
\\n13:37 What is left after a black hole evaporates?
\\n15:00 Could you have a star made out of something else?
\\n16:32 Could a planet orbit a binary star?
\\n18:29 Could aliens Planet 9?
\\n19:24 If aliens are advanced, we\'re no threat
\\n21:35 How can aliens not exist?
\\n22:30 Why don\'t they put a microscope in a rover?

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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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Our Book is out!
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\\nRSS: https://www.universetoday.com/audio

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What Fraser\'s Watching Playlist:
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Astronomy Cast:
\\nhttps://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg

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Team: Fraser Cain - @fcain / frasercain@gmail.com
\\nKarla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
\\nChad Weber - weber.chad@gmail.com

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