[Q&A] Rings Around Stars, Laser Space Propulsion, Life on Cold Moons

How do we determine the velocities of objects in distant space? Can we use a laser a space engine on a spaceship? Can we find stars with rings? Is it possible to see the same star at different stages of its life? All this and more in this week's Q&A.🦄 Support us on Patreon: https://patreon.com/universetoday00:00 Start02:21 [Tatooine] Can stars have rings?07:59 [Coruscant] Can we see stars at different life stages with gravitational lensing?11:29 [Hoth] Why not launch payloads from orbit?14:30 [Naboo] What would happen if time stopped?16:20 [Kamino] Does Elon/Twitter impact spaceflight confidence?18:28 [Bespin] How can there be life on cold moons?22:49 [Mustafar] What if a meteor hits the Moon while astronauts are there?25:58 [Alderaan] Shouldn't ETs be benevolent like Vulcans and not malevolent like Klingons?27:51 [Dagobah] How do we determine the speeds of objects in space?30:06 [Yavin] Why go back to the Moon?32:08 [Mandalore] Do you ever get tired of speculating and not lending your intellect to progress?34:14 [Geonosis] Wen JWST Deep Field?35:20 [Corellia] Why is Sag A disk not aligned with the galaxy?37:23 [Crait] Will there be a Mars colony this century?39:43 [Endor] Could we use a laser as an engine on a spaceship?📺 VIDEO VERSIONhttps://youtu.be/DM4pfPHS_R0📰 EMAIL NEWSLETTERRead by 55,000 people every Friday. Written by Fraser. No ads.Subscribe. It's FREE: https://universetoday.com/newsletter🎧 PODCASTSUniverse Today: https://universetoday.fireside.fm/Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast: http://www.astronomycast.com/🤳 OTHER SOCIAL MEDIATwitter: https://twitter.com/fcainTwitter: https://twitter.com/universetodayFacebook: https://facebook.com/universetodayInstagram: https://instagram.com/universetoday📩 CONTACT [email protected]⚖️ LICENSECreative Commons Attribution 4.0 International (CC BY 4.0)Support Universe Today Podcast