Live coverage: Veteran three-man crew docks with space station

Poised to loft a Russian-German X-ray astronomy observatory into space Friday, a Proton rocket returned to its launch pad Tuesday at the Baikonur Cosmodrome in Kazakhstan after a three-week delay to replace a drained battery on the vehicle.

SpaceX test-fired a Falcon 9 rocket Wednesday afternoon at NASA’s Kennedy Space Center in Florida, clearing a major hurdle before it launches Saturday night — weather permitting — with a four-person crew heading for the International Space Station.

The next stepping stone in China’s human spaceflight program launched Thursday, delivering a destination and living quarters to orbit for two astronauts preparing for liftoff next month on a planned 33-day expedition, the country’s longest space mission to date.