NASA Technical Reports Server NTRS 20150019434: Surface Exposure Ages of Space-Weathered Grains from Asteroid 25143 ItokawaReport as inadecuate



 NASA Technical Reports Server NTRS 20150019434: Surface Exposure Ages of Space-Weathered Grains from Asteroid 25143 Itokawa


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Space 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 JAXAs Hayabusa mission to asteroid 25143 Itokawa, and their laboratory analysis provides -ground truth- to anchor the timescales for space weathering processes on airless bodies.



Author: NASA Technical Reports Server (NTRS)

Source: https://archive.org/



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