Closing in on a Comet

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This image shows comet Tempel 1 as seen through the clear filter of the medium-resolution camera on NASA's Deep Impact spacecraft. It was taken on June 29, 2005, when the spacecraft was 4,151,586 kilometers (2,579,795 miles) away from the comet. Four images were combined together, and a logarithmic stretch was applied to enhance the coma of the comet.

CREDIT: NASA/JPL-Caltech/UMD