Messenger from Earth reaches Mercury orbit

Naming craters

This portion of a global mosaic of Mercury's surface shows 10 craters that received their names in March 2010, when the International Astronomical Union conferred its blessing. Craters on Mercury can't be named for just anyone; rather, they must honor "deceased artists, musicians, painters, and authors who have made outstanding or fundamental contributions to their field and have been recognized as art historically significant figures for more than 50 years." Click here for a closer view of all those craters.

Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington