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A weak and active surface of Bennu

The surface of the asteroid Bennu is so weakly bonded that rockslide avalanches are easily triggered by small body impacts, and boulders fractured due to diurnal heating and cooling are readily dislodged. The result is a surface under continuous renewal.

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Fig. 1: Bralgah crater on the boulder-covered surface of the asteroid Bennu.


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Correspondence to Masahiko Arakawa.

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Arakawa, M. A weak and active surface of Bennu. Nat. Geosci. 15, 430–431 (2022).

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