Join Neil deGrasse Tyson and comic co-host Sarah Rose Siskind as they answer fan-submitted Cosmic Queries about our collision course with the Andromeda galaxy, how the Big Bang got its name, the Cosmic Microwave Background radiation, dark matter, and much more. This episode originally aired on StarTalk Radio on July 27, 2018. Support us on Patreon: https://www.patreon.com/startalkradio Subscribe to StarTalk: https://www.youtube.com/user/startalkradio?sub_confirmation=1 Follow StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalkradio/ About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #NeildeGrasseTyson #Galaxy