How sure can astronomers be when estimating asteroid strikes? Why is Jupiter so radioactive? What happened to the methane on Mars story? Are black holes 2D or 3D? Answering all these questions and more in this week's Q&A show.
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00:00 Start
00:24 [Andoria] Can you prove that there's no life in the Universe?
04:14 [Vulcan] How certain can we be about asteroid strikes?
08:52 [Risa] Why is Jupiter so radioactive?
10:36 [Aeturen] Is there gravitational lensing for planets from their own stars?
13:45 [Vendikar] Wouldn't it be cheaper to send multiple satellites to deep space at a single time versus one at a time?
18:10 [Remus] What's my opinion on the shape of the Universe?
22:01 [Janus] What happened to methane on Mars?
24:27 [Cait] Will a major propulsion breakthrough happen soon?
28:26 [Betazed] Does Jupiter protect us from asteroids?
30:08 [Cheleb] Are black holes 2D or 3D?
32:28 [Nimbus] What's the most important resource on the Moon apart from water?
34:37 [Belos] How do gravitational wave detectors know where the signal came from?
37:50 [Lyar] Do Sunlike stars with tidally locked planets make sense?
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