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Surface Exposure Ages of Space-Weathered Grains from Asteroid 25143 ItokawaSpace weathering processes such as solar wind ion irradiation and micrometeorite impacts are widely known to alter the properties of regolith materials exposed on airless bodies. The rates of space weathering processes however, are poorly constrained for asteroid regoliths, with recent estimates ranging over many orders of magnitude. The return of surface samples by JAXA's Hayabusa mission to asteroid 25143 Itokawa, and their laboratory analysis provides "ground truth" to anchor the timescales for space weathering processes on airless bodies.
Document ID
20150019434
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Keller, L. P.
(NASA Johnson Space Center Houston, TX, United States)
Berger, E. L.
(Jacobs Technology, Inc. Houston, TX, United States)
Christoffersen, R.
(Jacobs Technology, Inc. Houston, TX, United States)
Date Acquired
October 15, 2015
Publication Date
November 2, 2015
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-CN-34416
Report Number: JSC-CN-34416
Meeting Information
Meeting: Space Weathering of Airless Bodies: An Integration of Remote Sensing Data, Laboratory Experiments and Sample Analysis Workshop
Location: Houston, TX
Country: United States
Start Date: November 2, 2015
End Date: November 4, 2015
Sponsors: Lunar and Planetary Inst.
Distribution Limits
Public
Copyright
Public Use Permitted.
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