[Q&A] My Favourite Space Image, Shape of Oort Cloud, The Concept of Aliens

When did humans first think of aliens? Why is Oort cloud a sphere when the Solar System is a disk? Which space image is my favourite? And in our Q&A+ on patreon, is search for life only limited to looking for water? Answering all these questions and more in this Q&A show.🎁 [Q&A+] Same video. No YT ads. BONUS question, totally free :https://www.patreon.com/universetoday🚀 [Overtime] Even more Q&Ashttps://www.patreon.com/universetoday00:00 Start00:30 [Paige Potter] When did humans first think of aliens? 03:24 [Paul_in_Tucson] Why is Oort cloud a sphere while Solar System is a disk?06:51 [Walter Hartman] Are dark matter and dark energy 100% real?11:33 [Scotty-Too-Hottie] How long before our Sun turns into a red giant? 13:34 [Heya Sasha] My favourite space image📺 VIDEO VERSIONhttps://youtu.be/k3iCw1Wtdws📰 GUIDE TO SPACE Newsletter No ads. Subscribe for FREE: https://universetoday.com/newsletter🎧 PODCASTSUniverse Today: https://universetoday.fireside.fm/Astronomy Cast: http://www.astronomycast.com/📩 CONTACT [email protected]⚖️ LICENSECreative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast