The images in this directory are courtesy of NASA and NSSDC.  They are
distributed in the public domain and may be used for any purpose.
However, NASA and NSSDC requests that you acknowledge them as the
supplier of the data.  In addition, where the source of the image (by
project or as a specific person) is credited in the text, you should
also acknowledge that, too.

For more information on these images, please see the included file,
PHOTO_FAQ.ps.