Time-lapse video: The Falcon Heavy goes vertical again

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 fueled its next Falcon 9 rocket at launch pad 39A and ignited the booster’s nine Merlin engines at sunset Thursday, passing a major step in the launch campaign leading up to liftoff of the Intelsat 35e communications satellite Sunday.

After several delays earlier this week, SpaceX conducted a hold-down test-firing of a Falcon 9 rocket at Cape Canaveral Friday evening in a key test before launch next week on a resupply mission to the International Space Station.