Nanfeishen
Executive Member
The South Pole-Aitken basin — the largest crater in the Solar System — is a gigantic impact structure on the far side of the Moon. Data from NASA’s lunar spacecraft point to the existence of a large excess of mass — about 2.18*1018 kg — in the lunar mantle under the basin. According to new research, this mass anomaly may contain metal from a massive asteroid that crashed into the Moon and formed the crater.
http://www.sci-news.com/space/south-pole-aitken-basin-mass-anomaly-07275.html“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,” said Dr. Peter B. James, a planetary researcher with Baylor University and the Lunar and Planetary Institute.
