For astronaut photography of Earth accessed through this website, please state "Image courtesy of Earth Sciences and Image Analysis Laboratory, NASA Johnson Space Center." We recommend that the caption for any photograph published include the unique photo number (Mission-Roll-Frame), and our website ( http://eol.jsc.nasa.gov ) so that others can locate or obtain copies when needed. We always appreciate notification of beneficial uses of astronaut photography of Earth-information on your applications. This will help us continue to maintain these services for the public. Send e-mail to earthweb@jsc.nasa.gov.