Comet Tempel 1 as seen by the NASA's Deep Impact impactor targeting sensor at 7:44 Universal Time, July 3, 2005.

Comet Tempel 1 as seen by the Deep Impact impactor targeting sensor at 7:44 Universal Time, July 3, 2005. This image was taken 1 hour and 37 minutes after the impactor was released from the flyby craft and is displayed on a logarithmic scale. The impactor was 808,478 kilometers (502,388 miles) away from the comet when the image was taken.

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