Photos: Atlas 5 rolls out for launch

The launch an Ariane 5 rocket with Brazilian and Korean communications satellites that was set for this week has been postponed indefinitely after protesters blocked access to the French Guiana spaceport.

The launch from Cape Canaveral of a top secret spy satellite for the U.S. government was aborted at the last moment early Saturday as its United Launch Alliance Delta 4-Heavy rocket ignited three main engines, a dramatic cutoff of the countdown that will delay the mission by at least one week.

A powerful commercial communications satellite to broadcast Internet signals over the Asia-Pacific region has arrived at Cape Canaveral for final launch preparations ahead of a planned Dec. 15 liftoff on top of a SpaceX Falcon 9 rocket.