A SpaceX capsule has arrived at the International Space Station, delivering the replacements for NASA's two stuck astronauts.

A Russia-controlled module on the space station has been leaking for years. Now, operators are working to figure out if the issue is affecting the entire station.

After a journey in the same Crew Dragon capsule built by Elon Musk’s SpaceX that carries NASA astronauts to orbit, the Axiom crew is scheduled to arrive at the space station on Thursday morning.

Retired astronaut Peggy Whitson, America's most experienced space flier, and rookie crewmates from India, Poland and Hungary blasted off on a privately-financed flight to the space station.