China has successfully launched a reusable robotic spacecraft for the third time since 2020, in a series of secretive orbital test flights that it says are aimed at developing reusable technologies to reduce space mission costs.

The uncrewed spacecraft was launched atop a Long March 2F rocket, the same rocket series used by China to transport its astronauts to space, at the Jiuquan Satellite Launch Centre in northwest China. The spacecraft will operate in orbit for "a period of time" before returning to a designated landing site in China. During its flight, reusable technologies will be "verified" and space experiments conducted, state media reported, giving no other details.

      The last launch of the spacecraft was in August 2022. It returned to Earth after 276 days in orbit. No details were given on what technologies were tested or how high it flew. Images of the spacecraft have never been shown to the public.

      The Chinese launch came hours after the countdown for a new launch of the X-37B was called off by SpaceX for a third time this week due to weather and technical issues at NASA's Kennedy Space Center in Florida.

      A new launch date has yet to be announced for the X-37B, which was poised to blast off on its seventh mission atop a SpaceX Falcon Heavy rocket capable of carrying the secretive robot spaceplane to a far higher orbit than ever before.

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