Episode 668: Q&A 122: How Will We Know It's Alien Life? And More...

In this week's episode, I answer questions about alien life, why the ISS is at its current altitude, and of course, many questions about black holes. 00:00 Start 00:11 How do we know it's life? 02:00 Could smaller planets form directly? 04:33 Any way to service Hubble? 05:55 Boost the station up? What does that mean? 07:18 If you went the speed of light to 10 light-years away... 08:40 Will we change our DNA? 11:34 Is Paul really a Doctor? 15:13 Have any stars gotten closer than Alpha Centauri? 16:13 Why can't you escape an event horizon? 17:30 Are black holes a singularity? 19:44 Why have we found so many hot Jupiters? 22:25 Why is ISS at its current altitude? 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=2 RSS: https://www.universetoday.com/audio Weekly email newsletter: https://www.universetoday.com/newsletter Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ Astronomy Cast: https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg Support us at https://www.patreon.com/universetoday More stories at https://www.universetoday.com/ Twitch: https://twitch.tv/fcain 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] Universe Today Podcast