Live coverage: Falcon 9 rocket launches, and lands, at Cape Canaveral

A European Ariane 5 rocket fired into a clear blue sky over French Guiana on Wednesday, delivering to space a powerhouse satellite for Australia’s government-backed $1.2 billion nationwide universal broadband network and Argentina’s second communications satellite.

Riding on a mobile launch platform, an Ariane 5 rocket made the 1.7-mile trip from its final assembly building to the ELA-3 launch zone in Kourou, French Guiana, on Monday morning, one day before its blastoff on a commercial mission with Australian and Indian communications satellites.

Ground crews loaded time-critical experiments, including 20 mice to help scientists study muscle atrophy, into SpaceX’s commercial Dragon cargo capsule Thursday, a day before a launch planned from Cape Canaveral toward the International Space Station.