Asteroid (101955) Bennu in the laboratory: Properties of the sample collected by  OSIRIS ‐ REx

Lauretta, D. S.; Connolly, H. C.; Aebersold, Joseph E.; Alexander, C. M. O'd.; Ballouz, Ronald‐L.; Barnes, Jessica; Bates, H. C.; Bennett, C. A.; Blanche, Laurinne; Blumenfeld, E. H.; Clemett, S. J.; Cody, George D.; DellaGiustina, D. N.; Dworkin, Jason P.; Eckley, S. A.; Foustoukos, Dionysis I.; Franchi, I. A.; Glavin, D. P.; Greenwood, R. C.; Haenecour, Pierre; Hamilton, V. E.; Hill, D. H.; Hiroi, T.; Ishimaru, K.; Jourdan, Fred; Kaplan, H. H.; Keller, L. P.; King, A. J.; Koefoed, Piers; Kontogiannis, Melissa K.; Le, L.; Macke, R. J.; McCoy, T. J.; Milliken, R. E.; Najorka, Jens; Nguyen, A. N.; Pajola, M.; Polit, Anjani T.; Righter, K.; Roper, H. L.; Russell, S. S.; Ryan, A. J.; Sandford, Scott A.; Schofield, P. F.; Schultz, Cody; Seifert, Laura; Tachibana, Shogo; Thomas-Keprta, K. L.; Thompson, M. S.; Tu, Valerie; Tusberti, Filippo; Wang, Kun; Zega, T. J.; Wolner, C. W. V.; Team, the OSIRIS‐REx Sample Analysis

doi:10.1111/maps.14227

articleMeteoritics and Planetary ScienceJun 26, 2024HYBRID OA

Asteroid (101955) Bennu in the laboratory: Properties of the sample collected by OSIRIS ‐ REx

DSD. S. Lauretta HCH. C. Connolly JEJoseph E. Aebersold CMC. M. O'd. Alexander RBRonald‐L. Ballouz

University of Arizona · American Museum of Natural History · +21 more institutions

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Abstract

Abstract On September 24, 2023, NASA's OSIRIS‐REx mission dropped a capsule to Earth containing ~120 g of pristine carbonaceous regolith from Bennu. We describe the delivery and initial allocation of this asteroid sample and introduce its bulk physical, chemical, and mineralogical properties from early analyses. The regolith is very dark overall, with higher‐reflectance inclusions and particles interspersed. Particle sizes range from submicron dust to a stone ~3.5 cm long. Millimeter‐scale and larger stones typically have hummocky or angular morphologies. Some stones appear mottled by brighter material that occurs as veins and crusts. Hummocky stones have the lowest densities and mottled stones have the…

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Topics

Keywords

Presolar grains
Meteorite
Regolith
Chondrite
Astrobiology
Mineralogy
Asteroid
Geology

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