[Q&A] Shrinking Sgr A*, Prime Directive for Mars, Dark Energy Detectors

Can there be Dark Energy detectors? When will Sgr A start shrinking? Should the Prime Directive apply to Mars? Can we bring a proper observatory in space? Answering all these questions and more in this week's Q&A show. 🦄 Support us on Patreon: https://patreon.com/universetoday 📚 Suggest books in the book club: https://www.goodreads.com/group/show/1198440-universe-today-book-club 00:00 Start 00:29 [Alaris] What about Dark Energy detectors? 08:40 [Ardena] Why don't we see different constellations during the year? 11:15 [Asuria] When will Sagittarius A start shrinking? 13:42 [Belote] Can we build a space station observatory? 18:44 [Belsa] How do we see objects falling into black holes? 20:14 [Cartego] How will interstellar communication work? 21:48 [Chulak] Should the Prime Directive apply to Mars? 26:18 [Dakara] Does Mars have meteors from Earth? 27:32 [Edora] Why do comets leave tails? 29:03 [Goronak] Can black holes explode? 30:43 [Hadante] Does liver damage make Mars trips impossible? 📺 VIDEO VERSION https://youtu.be/KFsIuE4BiaQ 📰 EMAIL NEWSLETTER Read by 60,000 people every Friday. Written by Fraser. No ads. Subscribe. It's FREE: https://universetoday.com/newsletter 🎧 PODCASTS Universe Today: https://universetoday.fireside.fm/ Astronomy Cast: http://www.astronomycast.com/ 🤳 OTHER SOCIAL MEDIA Twitter: https://twitter.com/fcain Twitter: https://twitter.com/universetoday Facebook: https://facebook.com/universetoday Instagram: https://instagram.com/universetoday 📩 CONTACT FRASER [email protected] ⚖️ LICENSE Creative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast