China's Tianwen-2 spacecraft is nearing its target asteroid, 2016 HO3 (also known as 469219 Kamo‘oalewa), after a 400-day journey. Initial images suggest the asteroid is smaller than previously estimated, with a diameter likely between 20 to 30 meters, rather than the earlier prediction of around 57 meters. The spacecraft is equipped with diverse sampling modes to navigate the asteroid's uncertain terrain. AI
RANK_REASON Space mission research update with new observational data. [lever_c_demoted from research: ic=1 ai=0.1]
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