Live coverage: Cygnus supply ship departs space station

A replay of the United Launch Alliance Atlas 5 rocket launching the Orbital ATK’s commercial Cygnus cargo freighter to the International Space Station from Cape Canaveral, Florida.

Elon Musk, SpaceX’s founder and chief executive, spoke with reporters via conference call May 15 as the company prepared for the launch of the first 60 satellites to build out a network of potentially thousands of broadband relay stations in low Earth orbit providing high-speed Internet to consumers around the world.

Taking aim on the International Space Station, nine kerosene-burning rocket engines powered a SpaceX Falcon 9 launcher into a clear sky over Florida’s Space Coast on Friday night to begin the final flight of the first version of the company’s Dragon cargo ship.