Tectonics on Mercury

Mercury is Tectonically Active, NASA

"Images obtained by NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft reveal previously undetected small fault scarps-- cliff-like landforms that resemble stair steps. These scarps are small enough that scientists believe they must be geologically young, which means Mercury is still contracting and that Earth is not the only tectonically active planet in our solar system, as previously thought."

from NASA Watch http://ift.tt/2dmCqh7
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