In this week's questions show, I answer questions about how the International Space Station stays above the Earth's atmosphere, does dark matter need a better name? And how do astronomers know they're looking at exoplanets and not sunspots?

Michael Rodruck with Pennsylvania State University

https://sites.psu.edu/mrodruck/

00:18 How does the ISS stay up?

01:54 Does dark matter need a better name?

04:12 Could planets orbit something that isn't a star?

07:00 GOTO Telescopes

09:22 How do we know it's exoplanets and not sunspots?

11:55 Interstellar travel without wormholes?

14:23 Why make Mars habitable?

16:38 Have we mapped Venus?

18:23 What would it feel like to stand on a massive disk?

20:25 Can dark matter get concentrated into a black hole?

22:30 Are there even closer black holes?

24:21 How do we know how many stars in the Milky Way?

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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