Comet Tempel 1 as seen by the Deep Impact impactor targeting sensor at 07:44 UTC on July 3, 2005. This image was taken 1 hour 37 minutes after the impactor was released from the flybycraft 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. Credit: NASA/JPL-Caltech/UMD. Click to enlarge.
