Snapshots from Atlas 5 launch

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.

NASA has awarded Masten Space Systems, a small company based in Mojave, California, a $75.9 million contract to deliver nine science and technology instruments to the moon’s south pole in 2022 with its XL-1 robotic lunar lander.

This detailed mission timeline covers major vehicle and crew activities during the Crew-2 countdown and rendezvous with the International Space Station.