Mar.05 -- Reading today's headlines you may think that billionaire entrepreneurs are new to the space race - they're not. It all started with them. Here's the brief history of private space travel. (Video by Gloria Kurnik. Graphics...

Nov. 3 ""U.S. Investigators continue to look into the cause of Fridays Virgin Galactic crash during a test flight that killed one of the two test pilots. Bloomberg's Ryan Chilcote reports on Countdown. (Source: Bloomberg)