Rocket Lab’s second mission of 2021 lifted off at 6:30 p.m. EDT (2230 GMT) Monday from New Zealand carrying six small satellites for customers in Australia and the United States, along with a test platform for a NASA small satellite mission to the moon launching later this year.

China led the world with 34 orbital launch attempts in 2019 — including two failures — followed by 22 flights from Russian-operated launch pads and 21 satellite delivery missions originating from U.S. spaceports, all of which were successful.

United Launch Alliance called off the planned launch of an Atlas 5 rocket Wednesday at Cape Canaveral to resolve a problem with valves at the launch pad, while a SpaceX team a mile-and-a-half to the south readied a Falcon 9 rocket for liftoff Thursday evening with a GPS navigation satellite for the U.S. military.