Geology of Mars - Learn about the six geological processes that are either currently operating on Mars or have operated during Martian history.
Map-a-Planet - Allows users to customise and download their own image maps of the Moon, Mars, Venus, and other planets and moons. From the USGS Astrogeology Research Programme.
Planetary Geology Teacher's Guide - PDF document from NASA's Education Division with classroom activities in physical and earth sciences for grades 5 and up.
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- Provides IAU rules and conventions for naming planets as well as accepted names for some planets and systems including mercury, mars, and the moon.