Google Earth is a virtual globe and mapping service offered by Google. It allows users to explore the Earth[SQ]s surface from a variety of perspectives, including :

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Satellite imagery:

High-resolution images of the Earth[SQ]s surface, taken from satellites.
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3D terrain:

A representation of the Earth[SQ]s topography, showing mountains, valleys, and other geographical features.
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Street View:

Images captured at street level, allowing users to virtually "walk" down streets in many cities around the world.
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Building models:

3D models of many buildings, particularly in urban areas.
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Historical imagery:

Access to older satellite images to see how areas have changed over time.
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User-created content:

Users can create and share their own content, such as tours, placemarks, and stories.

Essentially, Google Earth provides a powerful tool for visualization, exploration, and education, offering a rich, interactive experience of our planet. It[SQ]s accessible through a desktop application and a web browser.