Astronauts Butch Wilmore and Terry Virts suited up and ventured outside the International Space Station on Sunday on their third spacewalk in eight days to install equipment to help future commercial crew capsules built by Boeing and SpaceX navigate to the complex.

An Ariane 5 launcher fired into space from French Guiana, hauling two commercial satellites destined to broadcast television to Latin America for Intelsat, DirecTV and Argentina’s national telecom company.

Don’t miss riveting slow-motion video of Thursday’s blastoff of four European navigation satellite satellites captured by high-speed cameras at the Ariane 5 rocket’s jungle launch pad, plus dramatic up-close snapshots showing the launcher’s climb into the sky on 2.9 million pounds of ground-shaking thrust.