Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Apr 13, 2011
50 years ago, Yuri Gagarin blasted off on the first manned space mission, 41 years ago, man walked on the moon. And today it's become the dawn of commercial space flights, rovers landing on Mars, and probes orbiting Mercury. So are we still on the right track? Commercial Space Entrepreneur Jeffrey Manber explains.