Image of the Day: A Festival of Galaxies

 
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This view of the Cartwheel galaxy was created by combining images captured by four space telescopes: Galaxy Evolution Explorer, Hubble Space Telescope, Spitzer Space Telescope, and Chandra X-ray Observatory. Astronomers think a smaller galaxy, possibly one of two galaxies seen here (bottom left), passed through the center of the Cartwheel galaxy about 100 million years ago.

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