Special for so many reasons: Science journalist explains more on solar eclipse

Senior Editor of Space and Physics for Scientific American Lee Billings explains why this years solar eclipse was such a unique phenomenon. 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, indepth 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 with MSNBC Online Visit Subscribe t