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Impact events: October 2019


This paper considers how planetesimal impacts affect planetary atmospheres.

Subsequent to the Moon's formation, late accretion to the terrestrial planets modified their silicate crusts and mantles.

Fractured rocks of impact craters have been suggested to host deep microbial communities on Earth, and potentially other terrestrial planets, yet direct evidence remains elusive.

About 466 Mya, a major impact event took place between the orbits of Mars and Jupiter. Space dust spread all across the Solar System, and some of it was found near Saint-Petersburg, Russia, and in the south of Sweden.