SpaceX launches 64 satellites at once

SpaceX launched its Falcon 9 rocket on Monday, sending an unusual payload into space -- 64 satellites at the same time, a US record.California-based SpaceX has landed more than 30 of these boosters back on Earth, and has begun re-using them on subsequent missions.The booster then fired its engines and made a controlled, upright landing on a platform in the Pacific Ocean, video from SpaceX's live webcast showed.