Live coverage: Soyuz crew lands in Kazakhstan

The core piece of NASA’s first huge Space Launch System heavy-lift rocket designed to carry astronauts back to the moon fired its main engines more than eight minutes Thursday in southern Mississippi, acing a crucial test before the it ships to the Kennedy Space Center in Florida to prepare for liftoff.

Russia’s decision to partner with China on a planned lunar research station, and not join the U.S.-led Artemis moon program, was disappointing after more than two decades of cooperation on the International Space Station, says NASA’s top human spaceflight official.

Stymied by Russian government dithering that has indefinitely grounded a launch on a modified Soviet-era missile, Iridium officials say that SpaceX agreed to move up to July the first of seven Falcon 9 launches from California with the company’s next-generation mobile communications satellites.