Neil de Grasse Tyson on Cosmic Bruises and the Multiverse

Have other universes collided with our universe, leaving cosmic bruises on the cosmic background radiation, and what does that imply about our expanding universe In answering a fan s Cosmic Query, astrophysicist Neil deGrasse Tyson and Eugene Mirman ponder the possibility of cosmic collisions and discuss the physics of the multiverse. If you love StarTalk Radio, don t miss out on any StarTalk news. Sign up for our free newsletter: Catch up with StarTalk Radio around the web: iTunes SoundCloud Stitcher Twitter Facebook Google+ Pinterest Tumblr Instagram