China's Tianwen 2 probe marks halfway milestone en route to asteroid targetby Clarence OxfordBeijing (XNA) Oct 01, 2025China's Tianwen 2 spacecraft has reached the halfway point of its journey to near-Earth asteroid 2016 HO3 after more than four months in interplanetary flight, according to the China National Space Administration (CNSA). The robotic probe has already traveled 43 million kilometers and remains in stable condition, with another 45 million kilometers left before arrival. Launched on May 29 aboard a Long March 3B rocket from Xichang Satellite Launch Center in Sichuan, Tianwen 2 represents China's first attempt to return pristine asteroid samples to Earth. Following the delivery of asteroid material, Tianwen 2 will continue to a secondary destination: main-belt comet 311P. Related LinksChina National Space AdministrationAsteroid and Comet Mission News, Science and Technology