Original Caption Released with Image:

This image was taken during the close approach phase of Stardust's Jan 2, 2004 flyby of comet Wild 2. It is a distant side view of the roughly spherical comet nucleus. One hemisphere is in sunlight and the other is in shadow analogous to a view of the quarter moon. Several large depressed regions can be seen. Comet Wild 2 is about five kilometers (3.1 miles) in diameter.

Image Credit:

   NASA/JPL-Caltech 

http://photojournal.jpl.nasa.gov/catalog/PIA05004

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