Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
a detailed image of the moon Schematic illustration with a gravity gradient map of the lunar nearside and a cross-section showing two ilmenite-bearing cumulate downwellings from lunar mantle overturn.Over 4.2 billion years ago, the moon turned itself inside out to create the lunar surface that has become familiar to humanity. around 4.5 billion years ago, when another massive body in the solar system smashed into Earth, flinging molten material into space that coalesced as our natural satellite.
a"traditional" lunar view mare region is surrounded by a polygonal pattern of linear gravity anomalies blue patches indicate vestiges of dense material that sank into the interior of the moon.
"Our analyses show that the models and data tell one remarkably consistent story," Liang said."Ilmenite materials migrated to the nearside and sunk into the interior in sheet-like cascades, leaving behind a vestige that causes anomalies in the moon's gravity field, as seen by GRAIL." This research also adds nuance to an interesting picture of the moon we see today. The overturn of the lunar mantle billions of years ago would have led to the creation of a dark region known as theThis area of the moon is lower in elevation and has a thinner crust that's mostly blanketed by lava flows unlike the thicker crust of far side regions of the moon. It also has a higher concentration of rare elements like titanium and thorium.
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