Live coverage: Intelsat’s first “Epic” satellite in orbit after Ariane 5 launch

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 Russian-made Soyuz rocket was launched from Europe’s space base in French Guiana on Monday at 2102 GMT (6:02 p.m. local; 5:02 p.m. EDT) with the Sentinel 1B environmental satellite.

The forecast of stormy weather prevented rollback of the mobile service gantry and the continuation of the countdown at Cape Canaveral on Wednesday for the United Launch Alliance Delta 4 rocket.