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A baby planet created one of the moon's largest impact basins
Scientists have known for a long time that the Imbrium Basin, one of the largest impact craters on the moon, was the result of an asteroid colliding with our planet's natural satellite. Thanks to a new study led by Brown University professor Pete Schultz, we now know that that asteroid could have been so big, it could be classified as a protoplanet. Previously, computer models estimated the extraterrestrial rock to be around 50 miles in diameter. But according to the results of Schultz's experiments, it's actually around 150 miles across, or (as Space puts it) about the length of New Jersey.
