Can Mars One succeed? Neil Tyson gets a mission briefing from CEO Bas Lansdorp. In studio, Mike Massimino and Eugene Mirman are skeptical, candidate Ryan MacDonald calls in, and Bill Nye explains why he wants to send real astronauts.
Find out what itβs like to be an astronaut in the age of social media when Neil deGrasse Tyson interviews Chris Hadfield. Eugene Mirman co-hosts, Astro Mike Massimino is back, and Bill Nye extols the human exploration of space.