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Ted Bunch Had Seen Nearly Half the Impact Craters on Earth. He Had Never Seen Anything Like This.
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7,027 观看18448cosmicsummit原视频发布: 2026-05-29

Allen West discovered tiny spherules in sediment layers that were the size of dust grains and shaped like ball bearings, and when he consulted Ted Bunch—a retired NASA administrator who had worked on moon rocks, helped discover the K-Pg impactor, and visited nearly half of Earth's impact craters—Bunch expressed that he had never seen anything like these samples, indicating they represented an unusual and previously undocumented phenomenon in impact crater research.

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