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Pinwheel Galaxy - 2004-03-02  
This image of the nearby spiral galaxy M101, better known as the Pinwheel Galaxy, is a three-color combination of images from NASA's Galaxy Evolution Explorer (GALEX) spacecraft. The ultraviolet light, seen in blue in the arms of the galaxy, shows young stars (only 10 million years old), while the diffuse green visible light traces stars that have been living for more than 100 years. The red visible light image shows the stars that formed over a billion years ago.

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Keywords: space Pinwheel galaxy M101
License: This image is from NASA and while they have specifically put it in the public domain you should read their license details. (Details) (Link)

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