It's an audacious plan, the odds of success are low, but SpaceX is going to do it anyway: The private spaceflight company founded by billionaire Elon Musk will launch a rocket with landing legs into orbit today, then try to bring part of it back and park it in the ocean.
The chances of success? Maybe between 30 and 40 percent, said SpaceX vice president of mission assurance Hans Koenigsmann.