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China’s Tianwen-2 Reaches 20 km of Asteroid Kamo‘oalewa

7/8/2026

Summary

Tianwen-2 Nears Asteroid

Tianwen-2 probe reached within about 20 km of asteroid 2016 HO3 (Kamo‘oalewa) on 2 July 2026.
It launched on 29 May 2025 from Xichang Satellite Launch Center aboard a Long March 3B/G2 rocket and traveled ~1 billion km over 400 days.
It imaged the asteroid on 6 June 2026, closed to 2,000 km by 19 June 2026 and will study its shape, composition and interior for water or lunar material.
Tianwen-2 will collect samples, release a capsule during an Earth flyby, then travel to comet 311P.

Summary

Webb Refutes Lunar

James Webb Space Telescope observations show Kamo‘oalewa reflects light away from the lunar-fragment hypothesis.
2021 spectral analysis found its reflected light matches Apollo-mission lunar rocks.
The quasi-satellite spins once every 28 minutes, completing a rotation in under half an hour.
Pan-STARRS 1 discovered Kamo‘oalewa in 2016 on Haleakala, Hawaii.
Its 20-meter diameter would make it the smallest celestial body examined up close by a spacecraft.

Summary

**Xi Champions Space**

President Xi Jinping framed the Tianwen-2 probe’s arrival at Kamo’oalewa as a centerpiece of China’s “space dream.”
The China National Space Administration called the arrival a milestone intended to match or overtake the United States and Europe in deep-space exploration.
Officials said the decade-long plan, which includes a later comet visit after sample return, signals China’s intent to keep a continuous deep-space presence and become a leading space power.

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Tianwen-2 Nears Asteroid

Tianwen-2 probe reached within about 20 km of asteroid 2016 HO3 (Kamo‘oalewa) on 2 July 2026.
It launched on 29 May 2025 from Xichang Satellite Launch Center aboard a Long March 3B/G2 rocket and traveled ~1 billion km over 400 days.
It imaged the asteroid on 6 June 2026, closed to 2,000 km by 19 June 2026 and will study its shape, composition and interior for water or lunar material.
Tianwen-2 will collect samples, release a capsule during an Earth flyby, then travel to comet 311P.

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