The United Launch Alliance Atlas V rocket is backdropped by a blue sky as the vehicle rolls to the launch pad at Space Launch Complex 41.

On Cape Canaveral Air Force Station in Florida, the 197-foot-tall United Launch Alliance Atlas V rocket is backdropped by a bright blue sky as the vehicle rolls from the Vertical Integration Facility (VIF) to the launch pad at Space Launch Complex 41. Atop the rocket is NASA's Mars Science Laboratory (MSL), enclosed in its payload fairing. The rocket began its move from the VIF at 8 a.m. EST and arrived at the pad at 8:40 a.m.

Liftoff is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. MSL's components include a car-sized rover, Curiosity, which has 10 science instruments designed to search for signs of life, including methane, and help determine if the gas is from a biological or geological source. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin