Video: Liftoff of Delta 4 with WGS 7

An Ariane 5 rocket emerged from the final assembly building at the Guiana Space Center in South America on Monday for the journey across the tropical spaceport to the ELA-3 launch zone, where the 179-foot-tall (54.8-meter) booster will lift off Tuesday with a pair of commercial communications satellites.

SpaceX scrubbed the launch of a nearly 7.5-ton Intelsat communications satellite Sunday after a computer-triggered abort halted the countdown in the final 10 seconds.

The unpiloted Russian Soyuz MS-14 spacecraft docked with the International Space Station on its second try at 11:08 p.m. EDT Monday (0308 GMT Tuesday), three days after aborting an approach due to a problem with the Kurs automated rendezvous system.