Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu

@article{Simon2020WidespreadCM,
  title={Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu},
  author={Amy A. Simon and Hannah H. Kaplan and Victoria E. Hamilton and Dante S. Lauretta and Humberto Campins and Joshua P. Emery and Maria Antonietta Barucci and Daniella N. DellaGiustina and Dennis C. Reuter and Scott A. Sandford and Dathon R. Golish and Lucy F. Lim and Andrew J. Ryan and Benjamin Rozitis and Carina A. Bennett},
  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… 
Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history
TLDR
Global spectral observations by the OSIRIS-REx spacecraft have shown that carbon-bearing materials, including organics and/or carbonates, are widespread on the surface of near-Earth asteroid (101955) Bennu.
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)
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
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
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
Alignment of fractures on Bennu’s boulders indicative of rapid asteroid surface evolution
On asteroids, fractures develop due to stresses driven by diurnal temperature variations at spatial scales ranging from sub-millimetres to metres. However, the timescales of such rock fracturing by
Phase reddening on asteroid Bennu from visible and near-infrared spectroscopy
Context. The NASA mission OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) has been observing near-Earth asteroid (101955) Bennu in close
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,
The Role of Hydrated Minerals and Space Weathering Products in the Bluing of Carbonaceous Asteroids
The surfaces of airless bodies such as lunar and S-type asteroids typically become spectrally redder in visible to near-infrared reflectance with longer exposures to space weathering. However, some
...
...

References

SHOWING 1-10 OF 72 REFERENCES
Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history
TLDR
Global spectral observations by the OSIRIS-REx spacecraft have shown that carbon-bearing materials, including organics and/or carbonates, are widespread on the surface of near-Earth asteroid (101955) Bennu.
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.
Evidence for widespread hydrated minerals on asteroid (101955) Bennu
TLDR
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.
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
Properties of rubble-pile asteroid (101955) Bennu from OSIRIS-REx imaging and thermal analysis
Establishing the abundance and physical properties of regolith and boulders on asteroids is crucial for understanding the formation and degradation mechanisms at work on their surfaces. Using images
The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes
TLDR
Spectral observations and a principal components analysis suggest that Ryugu originates from the Eulalia or Polana asteroid family in the inner main belt, possibly via more than one generation of parent bodies.
The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy
TLDR
The Hayabusa2 team's study of the near-Earth carbonaceous asteroid 162173 Ryugu, at which the spacecraft arrived in June 2018, describes Ryugu's geological features and surface colors and combined results from all three papers to constrain the asteroid's formation process.
Episodes of particle ejection from the surface of the active asteroid (101955) Bennu
TLDR
The properties and behavior of particles ejected from Bennu are analyzed to determine the possible mechanisms of ejection and provide understanding of the broader population of active asteroids.
The OSIRIS-REx target asteroid (101955) Bennu: Constraints on its physical, geological, and dynamical nature from astronomical observations
We review the results of an extensive campaign to determine the physical, geological, and dynamical properties of asteroid (101955) Bennu. This investigation provides information on the orbit, shape,
...
...