[Q&A] Submarine for Titan, Planets Changing Size, Even Bigger LIGO

When does a Lagrange point stop being one? Can we make LIGO even bigger? Do planets change their size over time? Can we build a submarine to go to Titan? What's next for the TRAPPIST-1 system? All this and more in this week's Q&A! 🦄 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 01:21 [Tatooine] Gravitational waves from The Great Attractor? 04:57 [Coruscant] Can LIGO's arms be even longer? 11:37 [Hoth] Can planets change their size over time? 15:17 [Naboo] Can we build a sub for Titan? 17:26 [Kamino] Most surprising discoveries from JWST? 20:37 [Bespin] Could we detect technosignatures from the Star Wars Galaxy? 23:21 [Mustafar] What's the core of Jupiter made of? 25:38 [Alderaan] What's next for the TRAPPIST-1 system? 28:19 [Dagobah] How much mass can a Lagrange point have? 📺 VIDEO VERSION https://youtu.be/8G2mh15Uaf4 📰 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)