Distinctive space weathering on Vesta from regolith mixing processes

  title={Distinctive space weathering on Vesta from regolith mixing processes},
  author={Carle M. Pieters and Eleonora Ammannito and D. T. Blewett and B. W. Denevi and Maria Cristina De Sanctis and Michael J. Gaffey and Lucille Le Corre and J.-Y. Li and Simone Marchi and T. B. Mccord and Lucy A. McFadden and D. W. Mittlefehldt and Andreas Nathues and Evan Palmer and Vishnu Reddy and Carol A. Raymond and Christofer T. Russell},
The surface of the asteroid Vesta has prominent near-infrared absorption bands characteristic of a range of pyroxenes, confirming a direct link to the basaltic howardite–eucrite–diogenite class of meteorites. Processes active in the space environment produce ‘space weathering’ products that substantially weaken or mask such diagnostic absorption on airless bodies observed elsewhere, and it has long been a mystery why Vesta’s absorption bands are so strong. Analyses of soil samples from both the… CONTINUE READING
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