China'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.
The agency released a by Clarence Oxford
Beijing (XNA) Oct 01, 2025
China'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.
The agency released a monitor camera image showing the spacecraft with the Chinese flag visible, Earth appearing as a distant sphere in the background. 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.
The probe is scheduled to reach 2016 HO3, also known as 469219 Kamo'oalewa, in the summer of 2026. The asteroid, estimated at 40 to 100 meters in diameter, orbits the Sun while maintaining a close relationship with Earth as the most stable quasi-satellite identified to date.
Equipped with 11 instruments, including cameras, spectrometers, and radars, Tianwen 2 will analyze the asteroid before deploying devices to gather samples from its surface. Once secured, the spacecraft will return to Earth's vicinity and release a capsule to deliver the collected material.
Samples will be distributed among scientific teams to examine their physical, chemical, and isotopic characteristics. These findings are expected to deepen understanding of asteroid formation, early solar system evolution, and the role of small bodies in shaping planetary systems.
Following the delivery of asteroid material, Tianwen 2 will continue to a secondary destination: main-belt comet 311P. From there it will perform a remote-sensing survey, sending valuable data back to Earth for analysis.
Researchers anticipate that the mission will generate transformative discoveries, enhancing knowledge of Earth's neighborhood and expanding insights into the dynamics of minor celestial bodies.
Related Links
China National Space Administration
Asteroid and Comet Mission News, Science and Technology