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What are those lasers shooting out from telescopes? Can we build a space elevator? Could we grow plants in Mars regolith? Why not assemble telescopes in space? Answering all these questions and more in this week's Overtime Q&A.

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• 00:00 Start
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• 00:50 Could we plant in Mars regolith?
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• 02:35 What is the bright laser coming out of telescopes?
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• 06:08 Will telescopes be assembled in space?
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• 07:59 Would we have our money's worth if JWST broke?
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• 08:45 Any updates on space elevators?
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• 12:52 Will Breakthrough Starshot happen soon?
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• 15:24 What about a low-mass black hole?
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• 16:37 Could Gemini North and South do optical interferometry?
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• 19:06 Thoughts on Europa?
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• 21:46 How do galaxies collide if the Universe is expanding
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• 22:45 Could an LCD screen be a coronagraph?
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• 26:46 How does light travel farther than 13.8 billion light-years?
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• 28:19 Are we looking for machine civilizations?
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\U0001f4fa VIDEO VERSION
\nhttps://youtu.be/CB5JBkDqmu0

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\nCreative Commons Attribution 4.0 International (CC BY 4.0)

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