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| Large, Anomalous Mass Found Embedded Deep Beneath the Moon's Largest Crater
A large mass of unknown material has been discovered on the largest crater on the Moon and scientists aren't sure what it is. According to an April 2019 study published in the journal Geophysical Research Letters, the researchers believe the mass could contain metal from an asteroid that crashed into the celestial satellite, which resulted in the aforementioned crater, known as the Lunar South Pole-Aitken basin. "Imagine taking a pile of metal five times larger than the Big Island of Hawaii and burying it underground. That's roughly how much unexpected mass we detected," lead author Dr. Peter James, assistant professor of planetary geophysics at Baylor University, said in a statement. At roughly 1,550 miles in diameter, the Lunar South Pole-Aitken basin stretches across approximately one-fourth of the Moon, according to NASA. The Moon's circumference is roughly 11,000 kilometers. In addition to being the largest crater on the Moon, the Pole-Aitken basin is also one of the largest known