mascon

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mas·con

 (măs′kŏn′)

mascon

(ˈmæskɒn)
n
(Astronomy) any of several lunar regions of high gravity
[C20: from mas(s) + con(centration)]
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References in periodicals archive ?
The interiors of many basins are pronounced gravity "highs," the famous mass concentrations or mascons discovered in the early days of lunar exploration.
Mascons lurk beneath the lunar surface and cannot be seen by normal optical cameras.
Our first lunch together was at the Grand Hotel, in Birmingham, where he told me of his excitement at the discovery of mascons (basins) on the moon.
Mascons, the most advanced "psycholocalizer," affects the brain so that "the subject cannot tell which of his perceptions have been altered, and which has not" (114).
All other lunar mascons are associated with impact basins, though these basins are typically much larger than Lamont.
It was quite unusual to find one at Lamont since all other mascons are associated with impact basins and, hence, were believed to be due to the excess mass of mare lavas and/or a rise of the dense lunar mantle under the basin.