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Physical Analysis of Bennu Samples Reveals Regolith Production by Collisional Disruption on Near-Earth Asteroids

  • Authors: R.-L. Ballouz, A. J. Ryan, R. J. Macke, O. S. Barnouin, M. Lê, J. Moreno, S. Eckley, L. Hanton, A. Hildebrand, V. Toy-Edens, R. M. Meier, M. Berkson, E. Asphaug, S. Cambioni, C. G. Hoover, K. Jardine, E.R. Jawin, N. Lunning, J. L. Molaro, M. Pajola, K. Righter, K. T. Ramesh, F. Tusberti, K. J. Walsh, C. W. V. Wolner, D. N. DellaGiustina, H. C. Connolly, D. S. Lauretta

R.-L. Ballouz et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 6.

Depth, d, and diameter, D, of the craters on centimeter-scale Bennu samples. (a) Histogram showing the distribution of all 143 craters mapped on Bennu samples in this study. (b) The d of a subset of 40 of the largest craters as a function of their D, showing how the population clusters around d/D = 0.4 (dotted black line), with a minority reaching values as small as d/D = 0.2 (dashed black line). (c) A histogram of the crater d/D values from panel (b), which have a median of 0.36 ± 0.1. The values are not normally distributed, and there are some outlier craters with deep d/D.

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