A three-person crew stranded at China’s space station after their spacecraft will return Friday using the craft that brought the replacement crew up, state media said. The astronauts were on a six-month rotation and were supposed to return four days after the new crew arrived on November 1. Their return was aborted after their Shenzhou-20 spacecraft was believed to have been struck by a small piece of space debris. They are coming back using the Shenzhou-21 craft instead, state media said. The astronauts traveled to the Tiangong space station in April.