Neil deGrasse Tyson Explains The Drake Equation

How valid are the assumptions in the Drake Equation concerning the likelihood of intelligent life in the universe? Astrophysicist Neil deGrasse Tyson, host of StarTalk Radio and director of the Hayden Planetarium, answers a fan's Cosmic Query in this Behind the Scenes video. With co-host Chuck Nice. If you love StarTalk Radio, don't miss out on any StarTalk news. Sign up for our free newsletter: http://www.startalkradio.net/newsletter/youtube/ Catch up with StarTalk Radio around the web: iTunes - http://bit.ly/SOHDg6 SoundCloud - https://soundcloud.com/startalk Stitcher - http://www.stitcher.com/podcast/startalk Twitter - https://twitter.com/#!/StarTalkRadio Facebook - http://www.facebook.com/StarTalkRadio Google+ - http://googleplus.startalkradio.net Pinterest - http://pinterest.com/startalk/ Tumblr - http://startalkradio.tumblr.com/ Instagram - http://instagram.com/startalkradio