The first unmanned test flight of NASA’s Orion Spacecraft is blasting off atop a Delta IV Heavy rocket from Cape Canaveral Air Force Station’s Space Launch Complex.

A Delta IV Heavy rocket lifts off from Space Launch Complex 37 at Cape Canaveral Air Force Station carrying NASA’s Orion spacecraft on an unpiloted flight test to Earth orbit. Liftoff was at 7:05 a.m. EST. During the two-orbit, four-and-a-half hour mission, engineers will evaluate the systems critical to crew safety, the launch abort system, the heat shield and the parachute system.