Photos: Atlas 5 rolls out for launch

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.

A sophisticated combat-ready U.S. military missile warning satellite moved to its launch pad at Cape Canaveral Space Force Station Saturday on top of a United Launch Alliance Atlas 5 rocket, ready for liftoff Monday afternoon.

With NASA’s attention at the red planet shifting to collecting and bringing rock samples back to Earth — a feat that could take a decade with costs that will leave little money for other Mars missions — the space agency is counting on its workhorse Mars Reconnaissance Orbiter continuing its imaging and radio relay functions for nearly 10 more years.