Mound near lunar South Pole formed by unique volcanic process.

Mafic Mound, a distinctive and enigmatic feature near the Moon’s South Pole, is a volcanic structure unlike any other found on the surface of the Earth’s only natural satellite, says a team of planetary geologists at Brown University. It stands about 2,600 feet tall and 47 miles across and lies in the middle of a giant impact crater known as the South Pole-Aitken Basin. “If the scenarios that we lay out for its formation are correct, it could represent a totally new volcanic process that’s ne...
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