[Q&A] Rogue Gas Giant, Fish In Space, Detecting Primordial Black Holes

What effect would a rogue gas giant have if it flew through the Solar System? Can fish survive in microgravity and go to space? Do hypervelocity stars leave a wake we could detect? How much do we actually know about Proxima Centauri? All this and more in the week's Q&A! 🦄 Support us on Patreon: https://patreon.com/universetoday 00:00 Start 01:08 [Tatooine] Can life exist on an Earth-sized moon of a gas giant? 06:42 [Coruscant] Do hypervelocity stars leave a wake we could detect? 10:50 [Hoth] What's the thickness of the event horizon of a black hole? 13:16 [Naboo] What is the speed of gravity? 18:34 [Kamino] What would be the consequences of a rouge Jupiter? 21:44 [Bespin] Can fish go to space? 23:34 [Mustafar] What are the temperatures of black holes? 25:53 [Alderaan] How much do we actually know about Proxima Centauri? 27:29 [Dagobah] Can rogue planets have an atmosphere? 31:44 [Yavin] How to track possible primordial black holes? 35:44 [Mandalore] Does red/blue shift include all frequencies? 📺 VIDEO VERSION https://youtu.be/gLGx7l_Q4yk 📰 EMAIL NEWSLETTER Read by 55,000 people every Friday. Written by Fraser. No ads. Subscribe. It's FREE: https://universetoday.com/newsletter 🎧 PODCASTS Universe Today: https://universetoday.fireside.fm/ Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ 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 frasercain@gmail.com ⚖️ LICENSE Creative Commons Attribution 4.0 International (CC BY 4.0)