Manage episode 315321983 series 2513416
In this week's Questions and Answers show, I explain how an infinite Universe could be the ultimate answer to the Fermi Paradox, where the energy for tidal heating comes from, and why are there always so many asteroid scare stories in media?
00:43 Can a satellite remain in one spot?
03:56 Does an infinite Universe solve the Fermi Paradox?
06:41 Where does tidal heating energy come from?
08:43 Is an asteroid going to hit us soon?
11:35 Are galaxies traveling faster than light?
13:13 Is there an anti-matter photon?
14:24 Could there be Pluto Planets?
15:51 Can we move the Earth away from the Sun?
19:20 Can we protect spacecraft with magnetic fields?
22:49 If humans vanished, would there be any evidence?
24:52 Would I like to travel into the future?
25:58 Why are rockets launched in stages?
27:53 Biggest Starship telescope?
29:36 What energy pushes the planets around the Sun?
31:52 Will Starship ruin planetary protection?
34:28 Why can't we find Planet 9?
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