On Launch Complex 41 at Cape Canaveral Air Force Station bursts of smoke and steam signal liftoff for the Atlas V Centaur rocket.

On Launch Complex 41 at Cape Canaveral Air Force Station in Florida, bursts of smoke and steam signal liftoff for the Atlas V/Centaur rocket carrying NASA's Lunar Reconnaissance Orbiter, or LRO, and NASA's Lunar Crater Observation and Sensing Satellite, known as LCROSS, toward space. Surrounding the pad are lightning towers. LRO and LCROSS are the first missions in NASA's plan to return humans to the moon and begin establishing a lunar outpost by 2020. The LRO also includes seven instruments that will help NASA characterize the moon's surface: DIVINER, LAMP, LEND, LOLA , CRATER, Mini-RF and LROC. Launch was on-time at 5:32 p.m. EDT June 18. Photo credit: NASA/Jeffery Marino