UFO sightings happen all the time – maybe even today! What would happen if top-secret UFO information leaked from the government? Neil deGrasse Tyson ... source

Hey Earthlings! Thanks to Wix for sponsoring this video! Create your website now: http://www.wix.com/go/startalk On this episode of Wheel Of Science, Neil ... source

How much of the galaxy have we actually searched for extraterrestrial life? Neil deGrasse Tyson explores just how little we've looked at with Jill Tarter, ... source

America's favorite astrophysicist predicts what might happen if (or when) the people of Earth confirm the existence of life beyond this planet. #Colbert ... source