[Q&A] Replenishing Lost Atmosphere, Copy of Earth, Betelgeuse Supernova

How much of our atmosphere is lost to space and should we be actively replenishing it? Is there an exact copy of Earth out there hiding in the Universe? Can we use the Sun to send messages? And in our extended Q&A+ version, how the advancements in AI will change astronomy? Answering all these questions and more in this Q&A. 🎁 [Q&A+] Same video. No YT ads. BONUS question, totally free : https://www.patreon.com/universetoday 🚀 [Overtime] Even more Q&As https://www.patreon.com/universetoday 00:00 Start 00:30 [Naveed] Can we use the Sun to send messages? 03:49 [jeff miller] Can we replace the atmosphere we're loosing to space? 04:40 [Ghostdog4] When will Betelgeuse finally become a supernova? 06:35 [[PMG] Corey] How is JWST changing our understanding of cosmology? 10:38 [gtziavelis] Is there a copy of Earth somewehre out there in the Universe? 13:59 [Lance Haring] Do black holes poop dark matter? 📺 VIDEO VERSION https://youtu.be/HEoZBSRPCVM 📰 GUIDE TO SPACE Newsletter No ads. Subscribe for FREE: https://universetoday.com/newsletter 🎧 PODCASTS Universe Today: https://universetoday.fireside.fm/ Astronomy Cast: http://www.astronomycast.com/ 📩 CONTACT FRASER frasercain@gmail.com ⚖️ LICENSE Creative Commons Attribution 4.0 International (CC BY 4.0)