Video: Falcon 9 rocket fires engines in pre-launch test (members only)

With lingering uncertainly about when new commercial crew spaceships will be ready to launch humans, NASA Administrator Jim Bridenstine said Thursday the space agency will replace a Japanese astronaut with a U.S. space flier on the next Russian Soyuz launch to the International Space Station. He added that it remains in NASA’s interests to pay Russia for one or more additional Soyuz seats next year to ensure the station remains continuously staffed with at least one American.

A new Chinese mobile communications satellite launched Thursday on top of a Long March 3B rocket, joining a similar spacecraft launched four years ago to provide voice and data services to users on the go.

Rocket Lab’s Electron booster launched six small satellites and a drag sail demonstrator to orbit Sunday from New Zealand, a success on the company’s first commercial mission that officials said should pave the way for a launch carrying NASA CubeSats next month and up to 16 flights of the light-class rocket next year.