SpaceX successfully launched its Falcon 9 rocket today from California — over four months after one of the company’s vehicles exploded on a launchpad in Cape Canaveral, Florida. The rocket took off just before 1PM ET from Vandenberg Air Force Base, putting 10 satellites into orbit for communications company Iridium. After the initial takeoff, SpaceX was also able to land the Falcon 9’s first stage on a drone ship in the Pacific Ocean. It was the first successful launch of the Falcon 9 since August, as the company was forced to ground all of its vehicles following the September explosion.