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The latest planetary defense news, distilled by AI into sharp ~100-word summaries. ByteBrief tracks planetary defense across dozens of tech sources and brings you only what matters, updated hourly. Tap any story for the full brief, or open the original source.

China plans to slam a spacecraft into near-Earth asteroid 2015 XF261 before 2030 at Mach 26, faster than NASA's DART mission. A second spacecraft will observe the impact. The mission aims to directly change the asteroid's trajectory relative to Earth, simulating a real planetary defense scenario.
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