NASA World Wind is a graphically rich 3D virtual globe for use on desktop computers running Windows. It combines NASA imagery generated from satellites that have produced Blue Marble, Landsat 7, SRTM, MODIS and more.
IBM - Somers, New York USA - Zoomit! (community layer)
Blue Marble Next Generation: View of the eastern hemisphere
Mars - MOC 256 Colorized
USGS / MS Research Terra Server USA - Urban Area Ortho Image
SRTM + NLT LandSat 7: Mt. St. Helens, Washington
MODIS - 08-27-2005, Hurricane Katrina, Gulf of Mexico