Video: Antares rocket returns to flight with new engines

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.

The launch of a Soyuz rocket with a Progress refueling and resupply freighter was aborted seconds before liftoff Thursday in a rare scrub for Russia’s workhorse rocket, delaying the start of a journey to the International Space Station until at least Saturday and thwarting plans to test out a new automated fast-track rendezvous sequence.

Four clandestine payloads for the National Reconnaissance Office are awaiting liftoff Wednesday from Wallops Island, Virginia, on a Minotaur 4 rocket powered by Cold War-era missile stages stored for more than 30 years until their conversion into a satellite launcher.