Atlas 5 NROL-55 launch full broadcast

After three frustrating days of weather delays, the United Launch Alliance Atlas 5 rocket blasted off from Cape Canaveral at 4:44 p.m. EST (2144 GMT) today to send Orbital ATK’s commercial Cygnus cargo freighter to the International Space Station.

The United Launch Alliance Atlas 5 rocket stands atop Complex 41 at Cape Canaveral in readiness for the NROL-52 deployment mission for the National Reconnaissance Office.

Follow the major events of the Atlas 5 rocket’s launch with the Solar Orbiter spacecraft with this mission timeline.