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See Explanation. Clicking on the picture will download the highest resolution version available.

APOD---The Crown of the Sun

The Cartwheel galaxy as seen by 3 space telescopes. 100 million years ago, another, smaller galaxy tumbled through the Cartwheel galaxy and left behind "ripples" of star creation. The outer ring is the first ripple, with high ultraviolet output, and the inner yellow spot is from the second ripple, which was smaller and high in infrared output. From NASAimages.org #space #cartwheel | http://exploringuniversecollections.blogspot.com

APOD---All the Colors of the Sun

APOD--- Io in True Color