Photos: Falcon 9 launch from Press Site

Aiming to reduce risk and costs, NASA has decided to launch the first two modules of the Gateway station in lunar orbit on the same heavy-lift rocket in 2023, rather than fly them on separate rockets and dock them together in deep space, according to the the agency’s chief human spaceflight manager.

The 20th flight of a Rocket Lab Electron launcher appeared to run into trouble a few minutes after liftoff at 7:11 a.m. EDT (1111 GMT) Saturday from New Zealand, when video showed the rocket’s upper stage tumbling and shutting off its engine prematurely. The rocket was carrying two commercial BlackSky Earth observation satellites into orbit.

After calling a hold less than a minute before liftoff Friday, SpaceX launched the Maxar-built SXM 7 radio broadcasting satellite for SiriusXM Sunday. A Falcon 9 rocket lifted off from pad 40 at Cape Canaveral at 12:30 p.m. EST (1730 GMT).