Former ISS commander explains why this solar eclipse is so special

Former International Space Station Commander Leroy Chiao, who is one of the few people to see a solar eclipse from space, joins José Díaz-Balart to provide expertise on what happens during the rare event. » Subscribe to MSNBC: Download our new MSNBC app for the latest breaking news and daily headlines at a glance: Follow MSNBC Show Blogs MaddowBlog: ReidOut Blog: MSNBC delivers breaking news, in-depth analysis of politics headlines, as well as commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, The Beat with Ari Melber, Deadline: White House, The ReidOut, All In, Last Word, 11th Hour, and Alex Wagner who brings her breadth of reporting experience to MSNBC primetime. Watch “Alex Wagner Tonight” Tuesday through Friday at 9pm Eastern. Connect wi