Asteroid impact shifted the Moon’s poles over billions of years

New research shows that the Moon’s poles have shifted as a result of asteroid impacts over billions of years.

Astronomers have long used lunar craters to chart the history of both Moon and complete The Solar System, because the distribution of destruction left by asteroid impacts paints a picture of the violent conditions found in young solar systems. New research turns the tables on those studies by simulating the removal of thousands of craters and considering the impacts of smaller craters, thus recounting 4.25 billion years of lunar history.

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