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.

The two-week mission, chartered by Houston-based Axiom Space, is the fourth privately financed flight to the International Space Station.

After several postponed launches, Axiom Space's four private astronauts are finally on their way to the International Space Station (ISS). The multinational crew lifted off successfully aboard a SpaceX Dragon launched by a Falcon 9 rocket from NASA's Kennedy Space Center's Launch Complex 39A in Florida early Wednesday at 2:31 a.