Looking east from the lander, the last few bounce marks as Pathfinder rolled to a stop on July 4 are visible in the soil in this image, taken by NASA's Imager for Mars Pathfinder (IMP). Sol 1 began on July 4, 1997.

Looking east from the lander, the last few bounce marks as Pathfinder rolled to a stop on July 4 are visible in the soil in this image, taken by the Imager for Mars Pathfinder (IMP). The two most distant marks, identified by pointers in the image, consist of dark patches of disturbed soil. The three closest marks are clearly visible in the foreground, with one easily identifiable behind the Atmospheric Structure Instrument/Meteorology Package (ASI/MET) mast, is at right. The most distant positively identified bounce mark, indicated by the pointer at right, is approximately 11.3 meters (37 feet) from the lander.

Mars Pathfinder is the second in NASA's Discovery program of low-cost spacecraft with highly focused science goals. The Jet Propulsion Laboratory, Pasadena, CA, developed and manages the Mars Pathfinder mission for NASA's Office of Space Science, Washington, D.C. The Imager for Mars Pathfinder (IMP) was developed by the University of Arizona Lunar and Planetary Laboratory under contract to JPL. Peter Smith is the Principal Investigator. JPL is an operating division of the California Institute of Technology (Caltech).

Photojournal note: Sojourner spent 83 days of a planned seven-day mission exploring the Martian terrain, acquiring images, and taking chemical, atmospheric and other measurements. The final data transmission received from Pathfinder was at 10:23 UTC on September 27, 1997. Although mission managers tried to restore full communications during the following five months, the successful mission was terminated on March 10, 1998.

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