Curiosity Finishes Close Inspection Of Rock Target


This image shows the robotic arm of NASA’s Mars rover Curiosity with the first rock touched by an instrument on the arm. Image credit: NASA/JPL-Caltech

NASA’s rover Curiosity touched a Martian rock with its robotic arm for the first time on Sept. 22, assessing what chemical elements are in the rock called “Jake Matijevic.”

After a short drive the preceding day to get within arm’s reach of the football-size rock, Curiosity put its Alpha Particle X-Ray Spectrometer (APXS) instrument in contact with the rock during the rover’s 46th Martian day, or sol. The APXS is on a turret at the end of the rover’s 7-foot (2.1-meter) arm. The Mars Hand Lens Imager (MAHLI), on the same turret, was used for close-up inspection of the rock. Both instruments were also used on Jake Matijevic on Sol 47 (Sept. 23).

The Chemistry and Camera (ChemCam) instrument, which shoots laser pulses at a target from the top of Curiosity’s mast, also assessed what chemical elements are in the rock Jake Matijevic. Using both APXS and ChemCam on this rock provides a cross calibration of the two instruments.

Full Story: http://www.jpl.nasa.gov/news/news.php?release=2012-300

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