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نقشه ی پراکندگی جرم ماه
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[تصویر:  13548321731.jpg]









GRAIL's Gravity Map of the Moon
This
image shows the variations in the lunar gravity field as measured by
NASA's Gravity Recovery and Interior Laboratory (GRAIL) during the
primary mapping mission from March to May 2012. Very precise microwave
measurements between two spacecraft, named Ebb and Flow, were used to
map gravity with high precision and high spatial resolution. The field
shown resolves blocks on the surface of about 12 miles (20 kilometers)
and measurements are three to five orders of magnitude improved over
previous data. Red corresponds to mass excesses and blue corresponds to
mass deficiencies. The map shows more small-scale detail on the far side
of the moon compared to the nearside because the far side has many more
small craters.

› See video

Image credit: NASA/JPL-Caltech/MIT/GSFC
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