Hiding Earth from Aliens, Truth About Pyramids, Crashing Into a Black Hole | Q&A 353

🔴 [Q&A+] No ads. Bonus question. For FREE
https://www.patreon.com/posts/138685595

Can we make Earth invisible for possible alien invaders? What's the deal with the pyramids and their alignment to stars? Can an interstellar ship casually crash into a black hole? And what's the difference between cosmology and astronomy after all?

00:00 Start
00:27 [Rod Tolosa] Possible life on Venus
03:16 [abstractedaway] Heium-rich dwarf stars as techosignatures
04:00 [kenji] The truth about pyramids
06:25 [Jakub Polášek] Most interesting citizen science projects in astronomy/space field right now
07:21 [Osiris Mpg] Could an interstellar ship crash into a black hole?
08:34 [FunkyCritter] Will Earth's spin stop eventually?
09:12 [Keiichi S] Naked-eye nebula
11:03 [Nolan Mosley] LEO satellites and the ozone layer
13:11 [Nanp90] Making the Earth invisible for alienes

📰 EMAIL NEWSLETTER
Read by 70,000 people every Friday. Written by Fraser. No ads.
Subscribe for FREE: https://universetoday.com/newsletter

🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/

🤳 OTHER SOCIAL MEDIA
Mastodon: astrodon.social/@fcain
Twitter: https://twitter.com/fcain
Twitter: https://twitter.com/universetoday
Facebook: https://facebook.com/universetoday
Instagram: https://instagram.com/universetoday

📩 CONTACT FRASER
[email protected]

⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)

You are free to use my work for any purpose you like, just mention me as the source and link back to this video.