807: True Shape of the Universe, Asteroid Mining, Alien Astronomers | Q&A 180

In this week's live Questions and Answers show, I provide the exact number of alien worlds that could detect the Earth, are we made of heavier elements made in other galaxies, will lasers remain perfectly parallel in space? And more... 00:00 Start 01:15 [Tatooine] Could any aliens see us by the transit/radial velocity method? 04:05 [Corusant] Are we made from atoms made in other galaxies? 07:23 [Hoth] Will lasers remain parallel in space? 09:32 [Naboo] Is the Universe just a coincidence? 10:16 [Kamino] Are there too many satellites? 13:30 [Bespin] What do I think of ISRO? 15:31 [Mustafar] Will we ever reach the speed of light? 16:47 [Alderaan] Do I find the Great Filter convincing? 18:20 [Dagobah] How can we avoid planetary contamination? 20:53 [Yarvin] Does Pluto have an atmosphere? 22:22 [Mandalore] When will astronauts drop their poop on Mars? 22:38 [Geonosis] Do I see Starlink trails? 24:46 [Corellia] How big can objects get? 26:08 [Crait] Could there be space science startups? 27:19 [Endor] What will low gravity do to Martian colonists? 30:37 [Exegol] Why don't astronauts feel centripetal force? 31:48 [Jedha] Was space always a vacuum? 33:38 [Lothal] When will there be asteroid mining? 35:36 [Mortis] How do supermassive black holes form? 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 WEBSITE: ════════════════════════════════════ https://www.universetoday.com/ 🚀 PODCAST LINKS: ════════════════════════════════════ RSS: https://universetoday.com/audio iTunes: https://universetoday.com/itunes Spotify: https://universetoday.com/spotify 🚀 EMAIL NEWSLETTER: ════════════════════════════════════ Read by 50,000 people every Friday. Written by Fraser. No ads. Subscribe Free: https://universetoday.com/newsletter 🚀 OTHER PODCASTS: ════════════════════════════════════ Weekly Space Hangout: Weekly news roundup with Fraser, special guests, and other space journalists. RSS: https://www.universetoday.com/feed/wshaudio/ iTunes: https://podcasts.apple.com/ca/podcast/weekly-space-hangout-audio/id836926769 YouTube: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ Astronomy Cast: Award-winning, long-running deep dive into space and astronomy with Fraser and Dr. Pamela Gay. RSS: https://astronomycast.libsyn.com/rss/ iTunes: https://podcasts.apple.com/ca/podcast/astronomy-cast/id191636169?mt=2 YouTube: https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg 🚀 JOIN OUR COMMUNITY: ════════════════════════════════════ Patreon: https://patreon.com/universetoday Discord: https://discord.gg/3nk8kAARUm 🚀 OTHER SOCIAL MEDIA: ════════════════════════════════════ Twitter: https://twitter.com/fcain Twitter: https://twitter.com/universetoday Facebook: https://facebook.com/universetoday Instagram: https://instagram.com/universetoday Twitch: https://twitch.tv/fcain 🚀 CONTACT FRASER: ════════════════════════════════════ Email: frasercain@gmail.com 🚀 LICENSE: ════════════════════════════════════ Creative Commons Attribution 4.0 International (CC BY 4.0) You are free to use my work for any purpose you like, just mention me as the source and link back to this video.