Until the air leak detected on the ISS' Russian segment is resolved, NASA has opted not to send any other people to dock at the station.

The Axiom-4 mission launch, the fourth private astronaut mission to the International Space Station, was canceled Tuesday night after SpaceX detected a liquid oxygen leak in its Falcon 9 rocket.

The Voyager Targdigrades mission aims to explore how these microscopic creatures survive, reproduce and repair themselves in the harsh environment of space.