[Q&A] End of Expansion of the Universe, Hypervelocity Stars, Retrograde Planets

29 Jul 2025 • 20 min • EN
20 min
00:00
20:12
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Do we predictions when will the Universe stop its expansion? Did we find hypervelocity stars in M31? What does it mean when planets go retrograde? And in Q&A+ could the Big Bang be a white hole? 🎁 [Q&A+] Same video. No YT ads. BONUS question. FREE: https://www.patreon.com/universetoday 00:00 Start 00:27 [Peter Keyson] When will the Universe stop expanding? 02:54 [John De Keizer] Hypervelocity stars in M31 06:20 [kindness] What does it mean that planets are retrograde? 08:31 [J E] Are we working on strategies to mitigate the effect of satellites? 📺 VIDEO VERSION https://youtu.be/F5cmyeN1N9k 📰 GUIDE TO SPACE Newsletter No ads. Subscribe for FREE: https://universetoday.com/newsletter 🎧 PODCASTS Universe Today: https://universetoday.fireside.fm/ Astronomy Cast: http://www.astronomycast.com/ 📩 CONTACT FRASER frasercain@gmail.com ⚖️ LICENSE Creative Commons Attribution 4.0 International (CC BY 4.0)

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