Episode 517: QA 85: Am I Optimistic About Humanity? And More...

00:18 Am I optimistic about humanity?

01:59 Is the expansion happening everywhere?

04:03 How do they keep dust off big telescopes?

05:02 What if Olympus Mons erupted?

06:36 Can we see through the Bootes Void?

08:18 Could we make a really big Event Horizon Telescope?

09:53 Would we see a supernova in realtime?

11:53 Why are asteroids worth so much money?

13:08 Why don't we live on Venus?

14:54 Why do rockets go sideways?

15:58 Are gravitational waves being created all the time?

17:42 How can you tell the size of an object?

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