SpaceX Falcon 9 rocket launches secretive U.S. Space Force mission from California

Watch live coverage as SpaceX launches a Falcon 9 rocket from California carrying a classified payload for the U.S. Space Force. Liftoff from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base is scheduled for Thursday, Sept. 10, at 8:42:30 a.m. PDT (11:42:30 a.m. EDT / 1542:30 UTC). The first-stage booster, serial number B1081, launching for a 27th time, will land on the drone ship 'Of Course I Still Love You' nearly 8.5 minutes into the flight. The USSF-153 mission will take a south-easterly trajectory upon departure from Vandenberg. Live commentary from Spaceflight Now's Will Robinson-Smith will be provided starting about 30 minutes prior to launch. Source: