Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history

@article{Kaplan2020BrightCV,
  title={Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history},
  author={Hannah H. Kaplan and Dante S. Lauretta and Amy A. Simon and Victoria E. Hamilton and Daniella N. DellaGiustina and Dathon R. Golish and Dennis C. Reuter and Carina A. Bennett and Keara N. Burke and Humberto Campins and Harold C. Connolly and Jason P. Dworkin and J. P. Emery and Daniel P. Glavin and Timothy D. Glotch and Romy D. Hanna and K Ishimaru and Erica R. Jawin and Timothy J. Mccoy and N. A. Porter and Scott A. Sandford and Salvatore M. Ferrone and Beth Ellen Clark and J.-Y. Li and X.-D. Zou and Michael G. Daly and Olivier S. Barnouin and J. A. Seabrook and H. L. Enos},
  journal={Science},
  year={2020},
  volume={370}
}
The complex history of Bennu's surface The near-Earth asteroid (101955) Bennu is a carbon-rich body with a rubble pile structure, formed from debris ejected by an impact on a larger parent asteroid. The Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) spacecraft is designed to collect a sample of Bennu's surface and return it to Earth. After arriving at Bennu, OSIRIS-REx performed a detailed survey of the asteroid and reconnaissance of… Expand
20 Citations
Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu
TLDR
The OSIRIS-REx results constrain Bennu's evolution and provide context for the sample collected in October 2020, as well as finding evidence for organic and carbonate materials that are widely distributed across the surface but are most concentrated on individual boulders. Expand
Variations in color and reflectance on the surface of asteroid (101955) Bennu
TLDR
Maps of color and albedo on asteroid Bennu indicate complex evolution of its surface due to space weathering, and constrain Bennu's evolution and provide context for the sample collected in October 2020. Expand
Evidence for limited compositional and particle size variation on asteroid (101955) Bennu from thermal infrared spectroscopy
Context. Asteroid (101955) Bennu is the target of NASA’s Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission. The spacecraft’s instrumentsExpand
In search of Bennu analogs: Hapke modeling of meteorite mixtures
Context. The OSIRIS-REx Visible and InfraRed Spectrometer onboard the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer spacecraft obtained many spectra fromExpand
Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator
TLDR
These findings imply that other C-complex NEAs likely have boulders similar to those on Bennu rather than finer-particulate regoliths, and a tentative correlation between albedo and thermal inertia of C- complex NEAs may be due to relative abundances of boulder types. Expand
High-resolution observations of bright boulders on asteroid Ryugu: 1. Size frequency distribution and morphology
Abstract The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on Ryugu have reflectance spectraExpand
Visible–near-infrared observations of organics and carbonates on (101955) Bennu: Classification method and search for surface context
Abstract The OSIRIS-REx Visible and InfraRed Spectrometer (OVIRS) onboard the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraftExpand
Hydrogen abundance estimation and distribution on (101955) Bennu
Abstract Asteroids were likely a major source of volatiles and water to early Earth. Quantifying the hydration of asteroids is necessary to constrain models of the formation and evolution of theExpand
NORTHWEST AFRICA (NWA) 12563 and ungrouped C2 chondrites: Alteration styles and relationships to asteroids
Abstract Many asteroids in the main belt have spectra like those of Mighei-type CM chondrites, but some Near Earth Objects (NEO) resemble less well known types of C2 chondrite. Northwest Africa (NWA)Expand
A high-resolution normal albedo map of asteroid (101955) Bennu
Abstract We present a near-global normal albedo map of asteroid (101955) Bennu, created using images from the PolyCam imager onboard the Origins, Spectral Interpretation, Resource Identification, andExpand
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Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu
TLDR
The OSIRIS-REx results constrain Bennu's evolution and provide context for the sample collected in October 2020, as well as finding evidence for organic and carbonate materials that are widely distributed across the surface but are most concentrated on individual boulders. Expand
Variations in color and reflectance on the surface of asteroid (101955) Bennu
TLDR
Maps of color and albedo on asteroid Bennu indicate complex evolution of its surface due to space weathering, and constrain Bennu's evolution and provide context for the sample collected in October 2020. Expand
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TLDR
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TLDR
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Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator
TLDR
These findings imply that other C-complex NEAs likely have boulders similar to those on Bennu rather than finer-particulate regoliths, and a tentative correlation between albedo and thermal inertia of C- complex NEAs may be due to relative abundances of boulder types. Expand
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Physical, chemical, and petrological characteristics of chondritic materials and their relationships to small solar system bodies
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