Q&A with Elon Musk after SpaceX’s first rocket landing

SpaceX’s Falcon 9 rocket is set for liftoff from Cape Canaveral on Monday, heading due east over the Atlantic Ocean to deliver the Koreasat 5A communications satellite into orbit around 36 minutes later.

The mission represents the fifth pair of Boeing-built O3b mPOWER satellites to launch into medium Earth orbit. The Falcon 9 rocket lifted off from pad 40 at Cape Canaveral Space Force Station on Tuesday, July 22, at 5:12 p.m. EDT (2112 UTC).

SpaceX scrubbed the first test launch of its huge new rocket Monday due to a frozen valve in the pressurization system on the 33-engine Super Heavy booster, delaying the widely-anticipated flight from South Texas until at least Thursday.