Episode 657: Q&A 120: Dark Matter Black Holes? And More...

In this week's questions show, I answer whether or not dark matter could become a black hole, how do we know the Universe is flat, and what would happen to the world's market for precious metals once we start mining asteroids?Natalie Hinkel, SWRIhttp://www.nataliehinkel.com/Follow Natalie on Twitter:https://twitter.com/natalie_hinkel/00:26 Can dark matter turn into a black hole?05:07 If the Universe is flat, how can it be expanding?08:00 Will asteroid mining devalue markets on Earth?10:06 Good binoculars for a newbie?11:13 Why haven't we found Planet 9 yet?12:55 What species will replace humanity on Earth?16:14 What if someone found our spacecraft orbiting an interstellar object?17:45 What if Venus and Earth swapped sizes?19:09 Why do we need a reason for an accelerating Universe?22:37 Is NASA moving too fast?26:13 Could you use a leaf blower on the Moon?27:51 Could you have an exoplanetary system without a star?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.Our Book is out!https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/Audio Podcast version:ITunes: https://podcasts.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2RSS: https://www.universetoday.com/audioWeekly email newsletter:https://www.universetoday.com/newsletterWeekly Space Hangout:https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/Astronomy Cast:https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSgSupport us at https://www.patreon.com/universetodayMore stories at https://www.universetoday.com/Twitch: https://twitch.tv/fcainFollow us on Twitter: https://twitter.com/universetodayLike us on Facebook: https://www.facebook.com/universetodayInstagram - https://instagram.com/universetodayTeam: Fraser Cain - @fcain / [email protected] Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fwChad Weber - [email protected] Universe Today Podcast