(AP) -- The Air Force has launched a new classified spy satellite.
An un-manned Delta 4-Heavy rocket blasted off From Cape Canaveral Air Force Station on Sunday at 5:58 p.m.
It carried a satellite that was described in a news release from the National Reconnaissance Office as "the largest satellite in the world."
The mission is classified, so no other details are available.
The 23-story rocket took off after several delays over the past few months because of technical glitches, including a problem during fueling for a launch on Friday. Weather concerns on Sunday cleared shortly before launch time.
Explore further: Holiday lights on the Sun: SDO imagery of a significant solar flare