EarthView is a 3D-Earth-Viewer using the freely available Blue Marble NextGen data of the NASA.
Blue Marble is a set of satellite images with such a high resolution, that normal viewer software can't display them in full resolution. EarthView uses a dataset of textures with a resolution of up to 21600x21600 pixels generated by a specially developed Tile-Set generating software. The textures will be streamed from the database and displayed by EarthView on Demand, so no internet connection is needed.