Live coverage: SpaceX Falcon Heavy launches NASA’s Psyche on mission to a metal asteroid

SpaceX will test out new stabilizing fins that could help land the first stage of its Falcon 9 rocket on a floating barge in the Atlantic Ocean after liftoff on a space station resupply mission in mid-December, according to Elon Musk, the company’s billionaire leader.

The Starlink 17-4 mission adds another 24 satellites to the growing megaconstellation in low Earth orbit. Liftoff occurred Wednesday, August 13, at 10:05 p.m. PDT (1:05 a.m. EDT / 0505 UTC).

The mission came as SpaceX is preparing to launch a Dragon spacecraft to the International Space Station later this week. Liftoff of the Starlink 7-16 mission happened at 7:28 p.m. PT (10:28 p.m. ET, 0228 UTC).