Live coverage: Ariane 5 blasts off with two Intelsat satellites

Ziplines are used by thrill-seekers in adventures around the world, but now they are coming to the U.S. space program as the emergency escape system for personnel at Cape Canaveral’s Complex 41.

A new Russian weather satellite, a CubeSat to test a Silicon Valley startup’s water-based propulsion system, and eight more members of Spire’s commercial fleet of multipurpose nanosatellites were among 33 spacecraft that rode a Soyuz rocket into orbit Friday from Russia’s Far East.

A brief test-firing of a Falcon 9 rocket Wednesday morning kept SpaceX on track for a launch Saturday night from Cape Canaveral with a communications satellite to be jointly used by Telesat and APT Satellite of Hong Kong.