The Hayabusa2 and OSIRIS-REx teams have unexpectedly found bright boulders on their respective dark asteroids, Ryugu and Bennu, which provide solid clues about the composition and origin of impacting bodies in their formation history.

中文翻译：

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小行星粉碎，混合和成形

Hayabusa2和OSIRIS-REx小组意外地在各自的深色小行星Ryugu和Bennu上发现了明亮的巨石，这为撞击历史上撞击物体的组成和起源提供了坚实的线索。