PUBLIC INFORMATION OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
http://www.jpl.nasa.gov

PHOTO CAPTION                                P-44567
                                             Mars Screen Saver
                                             December 2, 1996

This image is a scene from a new Mars screen saver, produced by 
NASA's Jet Propulsion Laboratory and Berkeley Systems, Inc., 
developer of After Dark screen saver software. The new Mars 
screen saver is available today for use with Windows 3.1, Windows 
'95 and Macintosh formats and is free to download from JPL's Mars 
home page at http://www.jpl.nasa.gov/mars/ or from Berkeley 
Systems, Inc., at http://www.berksys.com  

This scene is a photograph of Valles Marineris, a huge canyon on 
Mars which stretches about 3,000 miles across the red planet or, 
roughly, clear across the continental United States.      The 
screen saver includes other dramatic scenes of some geologically 
intriguing regions on Mars, and a sequence which shows how a 
small rover onboard a lander/rover mission known as Mars 
Pathfinder can navigate on the surface, exploring rocks and soil. 
The images used in the screen saver were rendered on a CRAY T3D 
parallel supercomputer as part of JPL's Supercomputing Project. 
The project was a joint effort of JPL and Berkeley Systems, Inc.  

                             #####