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Moon's magma ocean was likely bombarded by asteroids, scientists say


The moon has been beaten up quite a bit over billions of years.

Our poor moon has been something of a punching bag for the inner solar system, and new research shows it's likely been getting pounded since it was still a warm, soft little baby planetoid.

Without any atmosphere to protect it, the moon has taken a lot of licks from asteroids and other wayward celestial objects over the eons, as the many craters on its surface testify. But a new study out of Australia's Curtin University suggests some primordial impacts may be responsible for shaping some of the moon's larger features.

"These large impact craters, often referred to as impact basins, formed during the lunar magma ocean solidification more than 4 billion years ago, should have produced different-looking craters, in comparison to those formed later in geologic history," Curtin professor and lead researcher Katarina Miljkovic ...


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