Google and NASA pair up for virtual space exploration - space - 18 December 2006 - New Scientist Space

"The crunch of Martian soil underfoot and the feel of Martian wind
against your cheek could one day be experienced by anyone with an
internet connection as a result of a new collaboration between NASA and
internet titan Google.

Google has already produced interactive maps of Mars and the Moon by
combining their own software with NASA imagery (see NASA and Google
bring Mars to PCs everywhere)."

More including google/mars at
http://space.newscientist.com/article.ns?id=dn10822