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 Jeffrey A. Seabrook and Heather 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… 
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.
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.
Composition of organics on asteroid (101955) Bennu
Context. The Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission detected an infrared absorption at 3.4 μm on near-Earth asteroid (101955)
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 instruments
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 from
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.
Geologic Context of the OSIRIS-REx Sample Site from High-resolution Topography and Imaging
The OSIRIS-REx spacecraft collected a surface sample from Hokioi crater (55.8° N, 42.3° E; diameter ∼20 m) on the asteroid Bennu in 2020 October. We explore the geology of the sample collection site,
Spacecraft sample collection and subsurface excavation of asteroid (101955) Bennu
Carbonaceous asteroids, such as (101955) Bennu, preserve material from the early Solar System, including volatile compounds and organic molecules. We report spacecraft imaging and spectral data
Distant Formation and Differentiation of Outer Main Belt Asteroids and Carbonaceous Chondrite Parent Bodies
Volatile compositions of asteroids provide information on the Solar System history and the origins of Earth's volatiles. Visible to near‐infrared observations at wavelengths of <2.5 µm have suggested
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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.
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.
The Unexpected Surface of Asteroid (101955) Bennu
TLDR
Early OSIRIS-REx observations of Bennu are considered to understand how the asteroid’s properties compare to pre-encounter expectations and to assess the prospects for sample return.
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Evidence for abundant hydrated minerals on the surface of near-Earth asteroid Bennu is revealed in the form of a near-infrared absorption near 2.7 µm and thermal infrared spectral features that are most similar to those of aqueously altered CM-type carbonaceous chondrites.
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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
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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.
Yamato 793321 CM chondrite: Dehydrated regolith material of a hydrous asteroid
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