PIA00750: "Barnacle Bill" Spectra
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Mars Pathfinder (MPF)
Spacecraft: Mars Pathfinder Lander
Instrument: Imager for Mars Pathfinder
Product Size: 682 x 554 pixels (width x height)
Produced By: Johns Hopkins University
Producer ID: P48972
MRPS81861
Addition Date: 1997-07-22
Primary Data Set: MARS_PATHFINDER_PAGE
Full-Res TIFF: PIA00750.tif (256.2 kB)
Full-Res JPEG: PIA00750.jpg (56.96 kB)

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Original Caption Released with Image:

These IMP spectra show the characteristics of the rock surface measured by the Alpha Proton X-Ray Spectrometer (blue), the soil trapped in pits on the rock surface (red), and the deposit of bright drift on the top of the rock. The area measured by the APXS has the properties expected for nearly unweathered igneous rock, and the soil trapped in the pits is intermediate to the unweathered rock and the highly weathered drift material.

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.

Image Credit:
NASA/JPL/Johns Hopkins University

Image Addition Date:
1997-07-22