Neil deGrasse Tyson talks Alfonso Cuarón's "Gravity," how he admires the film, and explains the science of what your tears would REALLY do if you cried in space.<br /><br />Thanks to Newtek, our valued partner helping us to bring SXSW to life with the Tricaster 455! For more, check out newtek.com!<br /><br />Tweet us your questions @WhatsTrending #SamsungSXSW<br />Subscribe for more videos: http://full.sc/NfhdwD<br /><br />Follow us on Twitter for real-time updates!<br />http://www.twitter.com/whatstrending<br /><br />Like us on Facebook!<br />http://www.facebook.com/WhatsTrending<br /><br />Add us to your circles on Google+!<br />https://plus.google.com/+WhatsTrending<br /><br />Sign-up to our newsletter for the hottest videos straight to your inbox!<br />http://bit.ly/wtnewsletter
