Neil de Grasse Tyson: Where Are the Aliens

If there is alien life in the galaxy, where are they Have they already visited Earth In this video from Business Insider and StarTalk Radio, astrophysicist Neil deGrasse Tyson speculates on what might happen if aliens do visit Earth, and what they might think of us, our scientific achievements and our early adventures in space. Neil also discusses what Stephen Hawkings fear of aliens really says about how we have treated less advanced civilizations in the past. Support us on Patreon: Subscribe to StarTalk: Follow StarTalk: Twitter: Facebook: Instagram: About StarTalk: Science meets pop culture on StarTalk Astrophysicist Hayden Planetarium director Neil deGrasse Tyson, his comic cohosts, guest celebrities scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up , StarTalk, NeildeGrasseTyson