Abstract
Whitepaper #185 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: surface/geological evolution; Mercury and/or the Moon; solar system formation, dynamics processes, and chronology
Highlights
Introduction and Significance of Establishing theRecent Impact Flux The evolution of the inner solar system bodies is intimately tied to the history of bombardment.Impacts shape every aspect of airless bodies, from the surfaces of regolith grains to crustal structures
The lunar impact flux record has been studied since the late 19th century (e.g., 1) and more intensively for the past half-century, since the Moon’s craters were recognized as impact features [2] and impact samples returned by the Luna and Apollo missions have been analyzed
Our current understanding of the lunar impact flux from 1 Ga to the present is based on interpretation of crater formation ages and on the ages of Luna and Apollo impact samples from presumed known locations
Summary
Introduction and Significance of Establishing theRecent Impact Flux The evolution of the inner solar system bodies is intimately tied to the history of bombardment.Impacts shape every aspect of airless bodies, from the surfaces of regolith grains to crustal structures. Our current understanding of the lunar impact flux from 1 Ga to the present is based on interpretation of crater formation ages and on the ages of Luna and Apollo impact samples from presumed known locations.
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