NASA WorldWind vs. Google Earth/Moon/Mars

Since no one else mentioned it, Google released a new version of
Google Earth on Monday, July 20, 2009, adding Earth's Moon as a
world to visit.

It sort-of reminded me of something I've seen before, and that
"something" is he

http://worldwind.arc.nasa.gov/

which is free like Google Earth and Google Moon with this claim:

" World Wind lets you zoom from satellite altitude into any
" place on Earth. Leveraging Landsat satellite imagery and Shuttle
" Radar Topography Mission data, World Wind lets you experience
" Earth terrain in visually rich 3D, just as if you were really
" there.
"
" Virtually visit any place in the world. Look across the Andes,
" into the Grand Canyon, over the Alps, or along the African Sahara.

Works with Win2K, WinXP and Vista, and an accelerated 3D graphics
card is "suggested". A list of compatible cards is he

http://worldwindcentral.com/wiki/Video_Card_Compatibility