Episode 788: Q&A 172: Why Do We Assume Extraterrestrials Will Be Hostile? And More...

In this week's questions and answers show, I explain why people might see extraterrestrials as a threat. What could we learn about astronomy if we lived at the center of a supervoid, and how far away are we from the Big Bang?00:00 Start01:10 Why do we assume extraterrestrials are evil?07:40 Could we see anything from within a supervoid?09:40 What if we lived near the Big Bang?10:25 Will James Webb ever look at Earth?11:34 What's the benefit of helium 3?14:47 Can we take animals to Mars?17:13 Will machines do all our exploring?20:36 Was the Universe as small as a grapefruit?21:42 Does the expansion of the Universe travel faster than the speed of light?23:04 Should we be worried about rogue black holes?25:14 When will we see the calibration star from James Webb?27:08 Did the Three-Body Problem change my opinion about extraterrestrials?30:07 Could there have been many Big Bangs and other universes?31:52 What is the Oort Cloud?33:00 Why do stars like Sirius shimmer?35:15 Will James Webb see the first stars?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/audioiTunes: https://universetoday.com/itunesSpotify: 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/id836926769YouTube: 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=2YouTube: https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg🚀 JOIN OUR COMMUNITY:════════════════════════════════════Patreon: https://patreon.com/universetoday🚀 OTHER SOCIAL MEDIA:════════════════════════════════════Twitter: https://twitter.com/fcainTwitter: https://twitter.com/universetodayFacebook: https://facebook.com/universetodayInstagram: https://instagram.com/universetodayTwitch: https://twitch.tv/fcain🚀 CONTACT FRASER:════════════════════════════════════Email: [email protected]🚀 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.Support Universe Today Podcast