SpaceX successfully reused for a third time a Falcon 9 rocket booster on Monday — a company first. It also launched 64 satellites from 34 organizations into space from Vandenberg Air Force Base in California. The mission, on behalf of the private company Spaceflight, set a record for the largest single launch of satellites from U.S. soil, SpaceX said.
Why it matters: Reusing rockets is central to SpaceX's business plan for lowering the cost of access to space. Until Monday, the company had not relaunched a Falcon 9 rocket that had already been flown into space and then returned to Earth more than twice.