SpaceX launched a Falcon 9 rocket at 5:37 a.m. PDT (8:37 a.m. EDT; 1237 GMT) Monday from Vandenberg Air Force Base in California with the third set of 10 new-generation satellites for Iridium’s voice and data relay network. The Falcon 9’s first stage booster successfully landed on a platform in the Pacific Ocean a few minutes after liftoff.

Nearly four weeks after its arrival at the International Space Station, a SpaceX Dragon supply ship departed the research lab Saturday and dropped out of orbit for a parachute-assisted splashdown in the Pacific Ocean southwest of Los Angeles. The Dragon capsule was released from the station’s robotic arm at 4:58 a.m. EST (0958 GMT), and splashdown occurred at approximately 10:36 a.m. EST (1536 GMT).

With its payload shroud filled with multiple U.S. Air Force satellites heading for a high-altitude perch over the equator, a United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral Saturday at 7:13 p.m. EDT (2313 GMT) in its most powerful configuration with five strap-on solid-fueled boosters.