THE BLOG
03/10/2014 10:32 am ET | Updated May 10, 2014

Neil deGrasse Tyson Will Blow Your Mind With "Cosmos" At SXSW 2014

Neil deGrasse Tyson and Ann Druyan discuss the new show "Cosmos," and how it feels to walk in the footsteps of Carl Sagan. Tyson also shared "Gravity" hits and misses, and what really happens when you cry in space.