Episode 545: Q&A 93: When Will The Space Junk Return To Earth? And More...

In this week's questions show, I explain how long it'll take for space junk to burn up in the Earth's atmosphere, would it be possible to put advertising in space, and why panspermia is appealing as a hypothesis.

01:04 When will the space junk return to Earth?

03:14 Why don't we clean up the junk?

06:50 Can we advertise in the night sky?

08:36 Why is pansperimia appealing as a hypothesis?

10:53 Crewed space station dedicated to astronomy?

13:25 Best way to reduce light pollution?

16:08 What factors are important for life?

18:41 Can a star and black hole orbit each other?

20:41 How does time dilation work?

24:46 What will happen if Starship works?

28:49 How do galaxies collide if everything is expanding?

30:10 Why are Saturn's rings fading away?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week, and answer them here.

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