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Google Earth is an online digital atlas freeware application that presents spatial information as a virtual globe and map developed by Google and initially released in June 2001. Google Earth requires Internet access as it displays geographic information from various servers but is a client application that can load and store custom data sets locally (or upload to servers). Google Earth’s platform is based on satellite imagery that provides a dynamic and interactive starting point for users; the imagery is periodically updated and has been processed in some locations to provide for 3D mapping. This entry examines how Google Earth works and how it is used.

Google Earth Defined

Imagery in Google Earth is tiled to create a mosaic of the Earth’s surface. Tiles can be seamless, ...

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