Video replay: Parker Solar Probe launches atop Delta 4-Heavy

United Launch Alliance scrubbed the launch of a Delta 4-Heavy rocket Wednesday night less than 10 seconds before liftoff from Cape Canaveral, the second such abort suffered by this mission.. The launch of a classified National Reconnaissance Office spy satellite is expected to be delayed at least several more days as engineers assess the cause of Wednesday’s last-minute abort.

A powerful commercial communications satellite to broadcast Internet signals over the Asia-Pacific region has arrived at Cape Canaveral for final launch preparations ahead of a planned Dec. 15 liftoff on top of a SpaceX Falcon 9 rocket.

United Launch Alliance has packed two days of rollout, countdown and launch activities into a two-minute video highlighting Friday night’s blastoff of an Atlas 5 rocket from Cape Canaveral with the U.S. Air Force’s SBIRS GEO Flight 4 missile-warning satellite.