Asteroid Bennu’s Rugged Surface Baffled NASA, We Finally Know Why

In one of the biggest surprises of NASA’s OSIRIS-REx mission, its target asteroid, Bennu, turned out to be a jagged, rugged world covered in large boulders, with few of the smooth patches of sandy or pebbly material scientists had expected based on observations with Earth-based instruments. Bennu’s looks were quite deceiving, and until now, scientists struggled to figure out why.
Posted on March 17, 2026
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