Live coverage: Dragon supply ship back on Earth

An apparent exterior coolant leak from a Russian laboratory module at the International Space Station has been reported by the crew. It follows similar leaks that struck a Russian Soyuz crew ferry craft and a Progress cargo ship within the past year.

Northrop Grumman called off the launch of an Antares rocket and a Cygnus space station cargo freighter Thursday night on Virginia’s Eastern Shore, the third aborted countdown in less than 24 hours for three different U.S. rockets.

A SpaceX Falcon 9 rocket lifted off from Cape Canaveral at 10:30 p.m. EDT Thursday (0230 GMT Friday). The 229-foot-tall launch vehicle delivered 60 satellites to orbit to begin the deployment of SpaceX’s Starlink Internet network, a fleet of spacecraft that may eventually number thousands.