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

Published: Jan. 11, 2023, 8 p.m.

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.

\n\n

\U0001f984 Support us on Patreon:
\nhttps://patreon.com/universetoday

\n\n
    \n
  • 00:00 Start
  • \n
  • 02:21 [Tatooine] Can stars have rings?
  • \n
  • 07:59 [Coruscant] Can we see stars at different life stages with gravitational lensing?
  • \n
  • 11:29 [Hoth] Why not launch payloads from orbit?
  • \n
  • 14:30 [Naboo] What would happen if time stopped?
  • \n
  • 16:20 [Kamino] Does Elon/Twitter impact spaceflight confidence?
  • \n
  • 18:28 [Bespin] How can there be life on cold moons?
  • \n
  • 22:49 [Mustafar] What if a meteor hits the Moon while astronauts are there?
  • \n
  • 25:58 [Alderaan] Shouldn't ETs be benevolent like Vulcans and not malevolent like Klingons?
  • \n
  • 27:51 [Dagobah] How do we determine the speeds of objects in space?
  • \n
  • 30:06 [Yavin] Why go back to the Moon?
  • \n
  • 32:08 [Mandalore] Do you ever get tired of speculating and not lending your intellect to progress?
  • \n
  • 34:14 [Geonosis] Wen JWST Deep Field?
  • \n
  • 35:20 [Corellia] Why is Sag A disk not aligned with the galaxy?
  • \n
  • 37:23 [Crait] Will there be a Mars colony this century?
  • \n
  • 39:43 [Endor] Could we use a laser as an engine on a spaceship?
  • \n
\n\n

\U0001f4fa VIDEO VERSION
\nhttps://youtu.be/DM4pfPHS_R0

\n\n

\U0001f4f0 EMAIL NEWSLETTER
\nRead by 55,000 people every Friday. Written by Fraser. No ads.
\nSubscribe. It's FREE: https://universetoday.com/newsletter

\n\n

\U0001f3a7 PODCASTS
\nUniverse Today: https://universetoday.fireside.fm/
\nWeekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/
\nAstronomy Cast: http://www.astronomycast.com/

\n\n

\U0001f933 OTHER SOCIAL MEDIA
\nTwitter: https://twitter.com/fcain
\nTwitter: https://twitter.com/universetoday
\nFacebook: https://facebook.com/universetoday
\nInstagram: https://instagram.com/universetoday

\n\n

\U0001f4e9 CONTACT FRASER
\nfrasercain@gmail.com

\n\n

\u2696\ufe0f LICENSE
\nCreative Commons Attribution 4.0 International (CC BY 4.0)

Support Universe Today Podcast