Map-a-Planet

Since the explosion of online maps and related technologies onto the
Internet, it has been relatively easy to find maps of any part of the Earth.
Finding detailed maps of the various planets and moons that share the
universe with us can be a bit more tricky. Stepping in to fill that gap in
online material is the Map-A-Planet site, created and maintained by the
United States Geological Survey's Astrogeology Research Program. Visitors to
the site will be able create (and download) customizable maps of planets
such as Mars and Venus, along with prominent moons such as Callisto (the
second largest moon of Jupiter) and Ganymede, which is Jupiter's largest
moon. Visitors can also create various levels of maps, ranging from those
that are quite basic all the way to those that incorporate more detailed
datasets. While the site is certain to be of general interest to most
individuals, it may be of particular value to science educators who wish to
offer students a rather rich-textured view of these marvelous bodies.