From NASA’s Colorado-built Mars Satellite Lifts Off, Starts 10-Month Trip:

NASA's Maven launches on Mars mission
NASA’s Maven launches on Mars mission

The United Launch Alliance Atlas V rocket lifts off from Space Launch Complex-41 at Cape Canaveral Air Force Station carrying the Mars Atmosphere and Volatile Evolution, or MAVEN, spacecraft on a 10-month journey to the Red Planet. Liftoff was at 1:28 p.m. EST. Photo courtesy NASA.