This Wednesday, Sept. 19, 2012 photo provided by NASA shows a rock about 8 feet (2.5 meters) in front of the Curiosity rover on Mars. The rock is about 10 inches (25 centimeters) tall and 16 inches ... more

This Wednesday, Sept. 19, 2012 photo provided by NASA shows a rock about 8 feet (2.5 meters) in front of the Curiosity rover on Mars. The rock is about 10 inches (25 centimeters) tall and 16 inches (40 centimeters) wide. The team has assessed it as a suitable target for the first use of Curiosity's contact instruments on a rock, and named it after the late Jacob Matijevic, who was the surface operations systems chief engineer for the Mars Science Laboratory Project and the project's Curiosity rover. (AP Photo/NASA/JPL-Caltech) The rock has been named "Jake Matijevic." This commemorates Jacob Matijevic (1947-2012), who was the surface operations systems chief engineer for the Mars Science Laboratory Project and the project's Curiosity rover. He was also a leading engineer for all of the previous NASA Mars rovers: Sojourner, Spirit and Opportunity. Curiosity's contact instruments are on a turret at the end of the rover's arm. They are the Alpha Particle X-Ray Spectrometer for reading a target's elemental composition and the Mars Hand Lens Imager for close-up imaging. less