Episode 554: Q&A 97: By Request, Here's Our Dog. And Then Some Actual Questions...

In this week's questions show, I introduce Ona, by request. I explain why I don't think going to space is going to fix the big challenges that humanity faces, and how do astronomers figure out how big a planet is?

Talking about existential threats with Phil Torres

https://www.youtube.com/watch?v=XKYTrKapyrs

00:00 Meet Ona

02:00 Will going to space fix our evil humanness?

04:40 Sparks under the space shuttle main engine

05:27 How do we know how big a planet is?

07:23 Can we push the Earth outward?

10:03 Why make so many telescopes?

11:50 Will we see less of the Universe in the future?

13:16 Will we have space colonies in my lifetime?

15:50 Is life beyond the scope of our ability to observe?

17:56 What about planets with long orbital periods?

19:57 What would happen if magnetars collided?

21:44 What will the CMB look like in billions of years?

Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week, and answer them here.

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