Reston, VA – The U.S. Geological Survey (USGS) and the Association of American State Geologists (AASG) announced that they have developed an updated geologic time scale and color scheme for use in ...
The United States Geological Survey (USGS) has released a 1:5,000,000 scale map recently which reveals a lot about the surface of the Moon. It is colour-coded for scientists, researchers and lunar ...
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