Watch the Falcon Heavy roar to life

Watch as NASA holds a briefing at the Kennedy Space Center on the four agency technology payloads that are part of the STP-2 mission flying into orbit aboard a SpaceX Falcon Heavy rocket.

Rocket Lab counted down to the second test flight of its commercial Electron satellite launcher Monday, U.S. time, but a dramatic computer-commanded abort triggered moments after its engines ignited kept the light-class booster on its New Zealand launch pad for at least two more days.

Wrapping up a nine-day mission, four commercial astronauts on Axiom Space’s second flight to the International Space Station departed the orbiting research complex at 11:05 a.m. EDT (1505 UTC) Tuesday. The crew rode back to Earth inside a SpaceX Dragon crew capsule for splashdown in the Gulf of Mexico at 11:04 p.m. EDT (0304 UTC).