"I’m Neil deGrasse Tyson, host of StarTalk Radio. I’ve recruited a crack team of scientists and science educators to help me bring the universe down to Earth. They are… The StarTalk All-Stars." New episodes premiere Tuesday nights at 7pm ET.
What will it take to send people to Mars safely, and bring them home again? StarTalk All-Stars host Astro Mike Massimino and co-host Maeve Higgins find out from John Charles, the Chief Scientist at NASA’s Human Research Program.