A SpaceX Falcon 9 rocket lifted off from Vandenberg Space Force Base in California at 12:26 p.m. PDT (3:26 p.m. EDT; 1926 GMT) Friday with another batch of 52 Starlink internet satellites. The mission is the first of two SpaceX launches scheduled Friday, with another Falcon 9 poised for liftoff from Florida a little more than four hours later.

The Russian Soyuz MS-13 spacecraft departed the International Space Station and landed in Kazakhstan Thursday, bringing home outgoing space station commander Luca Parmitano, Soyuz pilot Alexander Skvortsov, and NASA astronaut Christina Koch, who concluded a 328-day mission, the longest-ever spaceflight by a woman. The Soyuz undocked from the station at 0550 GMT (12:50 a.m. EST) Thursday, then landed on the Kazakh steppe at 0912 GMT (4:12 a.m. EST).

The launch of a United Launch Alliance Delta 4-Heavy rocket from Cape Canaveral was aborted three seconds before a planned liftoff at 3:28 a.m. EDT (0728 GMT). The rocket was set to loft a classified payload for the National Reconnaissance Office, the U.S. government’s spy satellite agency.