Live coverage: Kennedy Space Center to reopen Friday

Engineers are troubleshooting a small air leak aboard the International Space Station that was discovered last September, NASA reported Thursday. While it poses no safety threat, the lab’s three-man crew plans to seal themselves in the Russian segment of the station this weekend to help engineers pin down the leak’s location.

SpaceX launched 60 more spacecraft Wednesday to join the Starlink fleet beaming broadband signals around the world, while the company’s engineers move closer to debuting a sunshade that could reduce the satellites’ impacts on ground-based astronomy.

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.