Watch the Falcon 9 launch from pad 39A

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.

The Starlink 10-34 mission was SpaceX’s 20th Falcon 9 launch of the year so far. Liftoff from pad 40 occurred at 8:41:40 p.m. EST (0141:40).

Set to resume a brisk pace of launch activity after a nearly six-week respite, SpaceX test-fired its next Falcon 9 rocket Thursday at NASA’s Kennedy Space Center in Florida ahead of a planned liftoff Monday with several tons of experiments and supplies for the International Space Station.