For a shaded relief map of Mars, click on "Visible" and you'll get a mosaic of images from the Mars Orbiter Camera on NASA's Mars Global Surveyor.
Google Mars says it chose a gray-scale to better highlight images over the planet's true color which looks like butterscotch.
Bill Detwiler has nothing to disclose. He doesn't hold investments in the technology companies he covers.
Bill Detwiler is Managing Editor of TechRepublic and Tech Pro Research and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the social research and energy industries. He has bachelor's and master's degrees from the University of Louisville, where he has also lectured on computer crime and crime prevention.