How Cold Are Moon Shadows, Why Are Dark Matter Halos Spherical, War For The Moon | Q&A 251

How cold does it get in the shadows on the Moon? What's going on with dark matter research? Can we chase Oumuamua with a solar sail spacecraft? Will we ever face a war for the Moon? Answering all these questions and more in this week's Q&A.

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00:00 Start
00:29 [Andoria] How cold do shadows on the Moon get?
05:34 [Vulcan] Why are dark matter halos spherical?
08:48 [Risa] Are we alone in the Universe?
12:26 [Aeturen] Will there be a war for the Moon?
15:40 [Vendikar] Current obsessions
19:58 [Remus] What's going on with dark matter?
23:52 [Janus] Can we catch Oumuamua with a solar sail?
29:07 [Cait] What are the Hawking radiation particles?
29:52 [Betazed] What caused the Big Bang?
29:57 [Cheleb] How to transfer energy from space down to Earth?
33:49 [Nimbus] Will dark energy eventually decline?
36:44 [Belos] Is the risk of solar flares overblown or unappreciated?

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