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The program can also be downloaded on a smartphone or tablet, using a touch screen or stylus to navigate. Users can explore the globe by entering addresses and coordinates, or by using a keyboard or mouse. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Google Earth is a computer program, formerly known as Keyhole Earth Viewer, that renders a 3D representation of Earth-based primarily on satellite imagery.
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