Falcon 9

Live coverage: SpaceX Falcon 9 rocket lifts off on first SDA mission

SpaceX launched a Falcon 9 rocket at 7:29 a.m. PDT (10:29 a.m. EDT; 1429 UTC) Sunday from Vandenberg Space Force Base, California with 10 missile tracking and data relay satellites for the U.S. military’s Space Development Agency. The launch occurred three days after SpaceX aborted the first launch attempt at T-minus 3 seconds to examine data from one of the Falcon 9’s main engines.