Three views of the moon's nearside: the familiar sight from Earth (left), regions covered by titanium-rich volcanic flows (center) and polygonal pattern of gravity anomalies (righO (IMAGE)
Caption
The lunar near side with its dark regions, or “mare,” covered by titanium-rich volcanic flows (center) makes up the moon’s familiar sight from Earth (left). The mare region is surrounded by a polygonal pattern of linear gravity anomalies (blue in image on the right) interpreted to be the vestiges of dense material that sank into the interior. Their presence provides the first physical evidence for the nature of the global mantle overturn more than 4 billion years ago.
Credit
Adrien Broquet/University of Arizona
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