Photos: Atlas 5 rolls out for launch

NASA’s first asteroid-sampling probe, OSIRIS-REx, has been assembled at a Lockheed Martin satellite factory in Colorado and is now being tested to ensure it can withstand the harsh journey to an asteroid and back.

The United Launch Alliance Atlas 5 rocket, standing 194 feet tall and and weighing a million pounds, unleashes 1.6 million pounds of thrust from its main engine and two side-mounted solid boosters to launch the secret NROL-52 payload for the U.S. National Reconnaissance Office from Cape Canaveral.

On top of an Atlas rocket, the place where orbital spaceflight for American astronauts began, will sit Boeing’s Starliner spacecraft to launch humans into space starting next year.