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Earth Wallpaper

In the words of Carl Sagan, "The Earth is a very small stage in a vast cosmic arena." But to us, it's everything. The place where we live, love, work and play. The place where we are born and where we die. From space, Earth is big, blue and beautiful; fragile and inspiring. It's the only planet we've ever been to. In honor of Earth Day, take a moment to enjoy some spectacular images of our home, available for download, in our gallery below. And take a moment to appreciate the only home we've ever known.

Geologic delight
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LATEST IMAGE: Geologic delight

This beautiful image, taken on 11 January 2001, shows a geological formation in the Maur Adrar Desert in Mauritania, Africa. Known as the "Richat Structure," this snail-shell-like formation was created when a volcanic dome hardened and gradually eroded, exposing onion-like layers of rock.

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Credit: Image taken by the Landsat-7 satellite. Source: NASA Goddard Photo and Video flickr photostream. Courtesy of NASA/U.S. Geological Survey/Landsat-7/Goddard Space Flight Center.

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