LOS ANGELES, June 25 (Xinhua) -- A SpaceX Falcon 9 rocket lifted off from Launch Complex 39A at NASA's Kennedy Space Center in Florida at 2:31 a.m. local time (0631 GMT) Wednesday, beginning Axiom Mission 4, the fourth private astronaut flight to the International Space Station (ISS).

About eight minutes later, the reusable first-stage booster touched down at Landing Zone 1 on Cape Canaveral, completing its descent at 200 meters per second in a pinpoint landing, according to SpaceX.

The Dragon spacecraft is scheduled to dock with the ISS around 7 a.m. EDT (1100 GMT) Thursday after a 30-hour orbital chase. The four-person crew will spend up to 14 days in orbit conducting science, outreach and commercial demonstrations, NASA said.

Former NASA astronaut Peggy Whitson, who has spent 675 days in space, commands the mission. She is joined by pilot Group Captain Shubhanshu Shukla of the Indian Space Research Organization (ISRO), European Space Agency project astronaut Slawosz Uznanski-Wisniewski of Poland, and Hungarian to Orbit (HUNOR) astronaut Tibor Kapu of Hungary.

"With a culturally diverse crew, we are not only advancing scientific knowledge but also fostering international collaboration," Whitson said in a statement released by Houston-based Axiom Space.

The flight marks the first government-backed orbital mission for India, Poland and Hungary in more than four decades. NASA Acting Administrator Janet Petro said the launch underscored the "long history of cooperation" between NASA and Russia's Roscosmos on the ISS, following recent repairs to the station's Russian segment, according to a NASA media advisory.

Axiom Space said the astronauts will conduct about 60 experiments representing 31 countries -- the most attempted on any Axiom mission. Projects include radiation-tolerant electronics and student-designed physics demonstrations streamed live to classrooms worldwide.

After the mission, the Dragon spacecraft will undock and aim for a splashdown in the Atlantic Ocean off the Florida coast, returning scientific samples to Earth. ■