Search Results - "Jawin, E. R."
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Variations in color and reflectance on the surface of asteroid (101955) Bennu
Published in Science (American Association for the Advancement of Science) (06-11-2020)“…Visible-wavelength color and reflectance provide information about the geologic history of planetary surfaces. Here we present multispectral images (0.44 to…”
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Bennu’s near-Earth lifetime of 1.75 million years inferred from craters on its boulders
Published in Nature (London) (12-11-2020)“…An asteroid’s history is determined in large part by its strength against collisions with other objects 1 , 2 (impact strength). Laboratory experiments on…”
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Episodes of Particle Ejection from the Surface of the Active Asteroid (101955) Bennu
Published in Science (American Association for the Advancement of Science) (06-12-2019)“…Active asteroids are those that show evidence of ongoing mass loss. We report repeated instances of particle ejection from the surface of (101955) Bennu,…”
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Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history
Published in Science (American Association for the Advancement of Science) (06-11-2020)“…The composition of asteroids and their connection to meteorites provide insight into geologic processes that occurred in the early Solar System. We present…”
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In situ evidence of thermally induced rock breakdown widespread on Bennu’s surface
Published in Nature communications (09-06-2020)“…Rock breakdown due to diurnal thermal cycling has been hypothesized to drive boulder degradation and regolith production on airless bodies. Numerous studies…”
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Crater Population on Asteroid (101955) Bennu Indicates Impact Armouring and a Young Surface
Published in Nature geoscience (01-06-2022)“…The impactor-to-crater size scaling relationships that enable estimates of planetary surface ages rely on an accurate formulation of impactor–target physics…”
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Numerical simulations suggest asteroids (101955) Bennu and (162173) Ryugu are likely second or later generation rubble piles
Published in Nature communications (05-07-2024)“…Rubble pile asteroids are widely understood to be composed of reaccumulated debris following a catastrophic collision between asteroids in the main asteroid…”
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Low surface strength of the asteroid Bennu inferred from impact ejecta deposit
Published in Nature geoscience (01-06-2022)“…The surface strength of small rubble-pile asteroids, which are aggregates of unconsolidated material under microgravity, is poorly constrained but critical to…”
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The Morphometry of Impact Craters on Bennu
Published in Geophysical research letters (28-12-2020)“…Bennu is an ~500‐m‐diameter rubble‐pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and…”
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Global Patterns of Recent Mass Movement on Asteroid (101955) Bennu
Published in Journal of geophysical research. Planets (01-09-2020)“…The exploration of near‐Earth asteroids has revealed dynamic surfaces characterized by mobile, unconsolidated material that responds to local geophysical…”
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Hemispherical differences in the shape and topography of asteroid (101955) Bennu
Published in Science advances (08-10-2020)“…We investigate the shape of near-Earth asteroid (101955) Bennu by constructing a high-resolution (20 cm) global digital terrain model from laser altimeter…”
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The Formation of Terraces on Asteroid (101955) Bennu
Published in Journal of geophysical research. Planets (01-04-2022)“…The surface of the rubble‐pile asteroid (101955) Bennu has been characterized in detail by the OSIRIS‐REx (Origins, Spectral Interpretation, Resource…”
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Craters, Boulders and Regolith of (101955) Bennu Indicative of an Old and Dynamic Surface
Published in Nature geoscience (01-04-2019)“…Small, kilometre-sized near-Earth asteroids are expected to have young and frequently refreshed surfaces for two reasons: collisional disruptions are frequent…”
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The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations
Published in Nature communications (19-03-2019)“…During its approach to asteroid (101955) Bennu, NASA’s Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx)…”
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The dynamic geophysical environment of (101955) Bennu based on OSIRIS-REx measurements
Published in Nature astronomy (01-04-2019)“…The top-shaped morphology characteristic of asteroid (101955) Bennu, often found among fast-spinning asteroids and binary asteroid primaries, may have…”
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Asteroid (101955) Bennu’s Weak Boulders and Thermally Anomalous Equator
Published in Science advances (08-10-2020)“…Thermal inertia and surface roughness are proxies for the physical characteristics of planetary surfaces. Global maps of these two propertiesdistinguish the…”
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Global geologic map of asteroid (101955) Bennu indicates heterogeneous resurfacing in the past 500,000 years
Published in Icarus (New York, N.Y. 1962) (15-07-2022)“…Global geologic maps are useful tools for efficient interpretation of a planetary body, and they provide global context for the diversity and evolution of the…”
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Overview of the search for signs of space weathering on the low-albedo asteroid (101955) Bennu
Published in Icarus (New York, N.Y. 1962) (01-08-2023)“…This paper summarizes the evidence for the optical effects of space weathering, as well as the properties of the surface that control optical changes, on…”
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Exogenic Basalt on Asteroid (101955) Bennu
Published in Nature astronomy (01-01-2021)“…When rubble-pile asteroid 2008 TC3 impacted Earth on October 7, 2008, the recovered rock fragments indicated that such asteroids can contain exogenic material…”
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Heterogeneous mass distribution of the rubble-pile asteroid (101955) Bennu
Published in Science advances (01-10-2020)“…The gravity field of a small body provides insight into its internal mass distribution. We used two approaches to measure the gravity field of the rubble-pile…”
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