An Ariane 5 rocket and four Galileo navigation satellites launched from French Guiana at 1125 GMT (7:25 a.m. EDT), beginning a four-hour climb into orbit more than 14,000 miles above Earth.

United Launch Alliance teams rolled the Mobile Service Tower away from a Delta 4-Heavy rocket at Cape Canaveral’s Complex 37B launch pad Wednesday in preparation for liftoff on a national security mission.

Two spacewalkers attached a new docking port to the International Space Station Friday, clearing the way for U.S. crew ferry ships being built by Boeing and SpaceX to begin test flights to the lab complex next year.