LOS ANGELES, July 14 (Xinhua) -- Axiom Space's fourth all-private astronaut crew wrapped up their mission to the International Space Station (ISS) on Monday, and started their journey back to Earth.

The SpaceX Dragon spacecraft, carrying the four-member crew, undocked from the ISS's Harmony module at 7:15 a.m. Eastern Time (1115 GMT) Monday to head back to Earth.

The spacecraft is scheduled to splash down off the coast of the U.S. state of California early Tuesday.

The mission, codenamed Axiom Mission 4, launched on June 25 aboard a SpaceX Falcon 9 rocket from NASA's Kennedy Space Center in Florida.

The crew includes Peggy Whitson, former NASA astronaut and director of human spaceflight at Axiom Space, Indian Space Research Organization astronaut Shubhanshu Shukla, European Space Agency project astronaut Slawosz Uznanski-Wisniewski of Poland, and Hungarian to Orbit astronaut Tibor Kapu.

The returning Dragon capsule is carrying over 580 pounds (about 263 kg) of cargo, including NASA hardware and data from more than 60 scientific experiments conducted during the mission.