China successfully landed the first-stage booster of a Long March 10B rocket on a floating barge during an orbital launch test earlier Friday, marking the first major step in reusable launch technology, albeit roughly a decade behind Elon Musk's SpaceX."This mission … signifies a historic breakthrough in China's reusable rocket technology and a solid foundation for accelerating the improvement of China's space access capabilities," the China Aerospace Science and Technology Corporation wrote in a social media post.China has achieved its first-ever controlled recovery of a rocket booster, a breakthrough for the country's reusable space tech. On the maiden flight of…