The Biggest Hole in the Solar System
There's a huge splotch on the southern hemisphere of the farside of the Moon. This megasmudge is South Pole-Aitken (SPA) basin, 2500 km in diameter and over 12 km deep. It is darker and richer in iron than the rest of the lunar highlands. Such immense craters formed by impact onto the lunar sur...
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| Language: | English |
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1998
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.557.6238 http://www.psrd.hawaii.edu/July98/PSRD-spa.pdf |