See related story: Net Maverick Sets Sights on Space

Less than a year after wrapping up his involvement in PayPal, 31-year-old Elon Musk is on a mission to revolutionize the technology and economics of the space-launch business with his new company, SpaceX. Musk says his new project is on course to launch its brand-spanking-new Falcon rocket by the end of the year -- with a U.S. military satellite on board.
SpaceX