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
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.
Audio Podcast version:
Weekly email newsletter:
Weekly Space Hangout:
Support us at https://www.patreon.com/universetoday
More stories at https://www.universetoday.com/
Follow us on Twitter: https://twitter.com/universetoday
Like us on Facebook: https://www.facebook.com/universetoday
Instagram - https://instagram.com/universetoday
Team: Fraser Cain - @fcain / [email protected]
Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
Chad Weber - [email protected]