Exogenic basalt on asteroid (101955) Bennu
When rubble-pile asteroid 2008 TC 3 impacted Earth on 7 October 2008, the recovered rock fragments indicated that such asteroids can contain exogenic material 1,2. However, spacecraft missions to date have only observed exogenous contamination on large, monolithic asteroids that are impervious to collisional disruption 3,4. Here, we report the
DellaGiustina, D. N. et al.
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2021