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Browsing Aerospace Engineering by Author "Richardson, James E."
No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions
Huang, Ya-Huei; Minton, David A.; Zellner, Nicolle E. B.; Hirabayashi, Masatoshi; Richardson, James E.; Fassett, Caleb I. (2020-05-27)
The distributions of Ar-40/Ar-39-derived ages of impact glass spherules in lunar regolith samples show an excess at <500 Ma relative to older ages. It has not been well understood whether this excess of young ages reflects ...