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Johns Hopkins UniversityEst. 1876

America’s First Research University
Archived articles

Mercury

A black and white image of a crater in Mercury's surface, surrounded by dark marks at the rim of the crater.
Dark Planet
Why is Mercury so dark?
Published March 10, 2016
APL scientists believe carbon may explain planetary puzzle
Name Game
Name a crater on Mercury
Published Dec 22, 2014
NASA's Messenger team launches 'Name a Crater' competition, which is open until Jan. 15