Engineers work on the Mars rover Curiosity at NASA's Jet Propulsion Laboratory in Pasadena, Calif., Thursday, Sept. 16, 2010. The rover Curiosity is expected to launch from Cape Canaveral Air Force Station in Florida, between Nov. 25 and Dec. 18, 2011. (AP Photo/Jae C. Hong)

Jae C. Hong - STAFF,JCH DK**NY** - Caption Writer
Engineers work on the Mars rover Curiosity at NASA's Jet Propulsion Laboratory in Pasadena, Calif., Thursday, Sept. 16, 2010. The rover Curiosity is expected to launch from Cape Canaveral Air Force Station in Florida, between Nov. 25 and Dec. 18, 2011. (AP Photo/Jae C. Hong)
Engineers work on the Mars rover Curiosity at NASA's Jet Propulsion Laboratory in Pasadena, Calif., Thursday, Sept. 16, 2010. The rover Curiosity is expected to launch from Cape Canaveral Air Force Station in Florida, between Nov. 25 and Dec. 18, 2011.

Engineers work on the Mars rover Curiosity at NASA's Jet Propulsion Laboratory in Pasadena, Calif., Thursday, Sept. 16, 2010. The rover Curiosity is expected to launch from Cape Canaveral Air Force Station in Florida, between Nov. 25 and Dec. 18, 2011. (AP Photo/Jae C. Hong)