Watch a live view of the Atlas 5 launch pad with countdown audio (members only)

The next Atlas 5 rocket launch from Cape Canaveral will be delayed two weeks to resolve an undisclosed issue with the payload, United Launch Alliance officials announced Friday.

A layer of fog intruding on Vandenberg Air Force Base in California kept nearby observers from seeing any sign of Saturday’s predawn launch of an Atlas 5 rocket carrying a robotic NASA probe to Mars. The only images of the Atlas 5’s fiery takeoff came from remote cameras placed at the launch pad, or from distant viewing points away from the poor visibility.

Cape Canaveral was the point of origination for the United Launch Alliance Atlas 5 rocket and the classified NROL-52 payload.