[Q&A] Gravity Assist Speed Limit, Double Gravitational Lenses, Phones in Space

What's the maximum speed you can get from a gravity assist? Can we have a double gravitational lens? What do you need to do to a phone to sent it to 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 00:25 [Alaris] Can phones survive in space? 06:10 [Ardena] Asteroid vs meteorite 07:27 [Asuria] What happened to Orion, Meade, and Coronado telescope companies? 09:51 [Belote] Can we learn something about a supernova that the Sun was created from? 13:35 [Belsa] Can there be double gravitational lenses? 15:16 [Cartego] Favourite thing to observe visually? 17:41 [Chulak] Can we make a 2 AU interferometer? 21:21 [Dakara] Why are black holes different in size and mass? 24:20 [Edora] What does Starliner's return mean? 27:31 [Goronak] Thoughts on Starlink polluting the sky? 32:34 [Hadante] Are public funds on space wasteful? 36:30 [Hebridan] Can NASA vs China space race boost exploration? 40:11 [Jenev] What is the speed limit that can be achieved by sling-shot around planets? 📺 VIDEO VERSION https://youtu.be/hSrp6VHjHbo 📰 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 frasercain@gmail.com ⚖️ LICENSE Creative Commons Attribution 4.0 International (CC BY 4.0)