Photos: Atlas 5 rolls out for launch

An electrical problem on one of the Ariane 5 rocket’s two solid rocket boosters led to an on-pad launch abort Tuesday, likely delaying liftoff with two U.S.-built communications satellites until around the end of September, Arianespace officials said.

Seven weeks to the day after their launch was postponed by a massive wildfire and the aftermath, a commercial Atlas 5 rocket and Earth-imaging satellite are scheduled to fly on Sunday, Nov. 6 from Vandenberg Air Force Base in California.

The most powerful configuration of United Launch Alliance’s Atlas 5 rocket blasted off April 14 from Cape Canaveral, hauling multiple U.S. Air Force satellites to a perch high above the equator after piercing a clear evening sky over Florida’s Space Coast with 2.6 million pounds of thrust.