Hear this story The mission, which was recently delayed for the second time, is due to get off the ground once again from NASA's Kennedy Space Center in Cape Canaveral, Florida. The crew will be under the command of Peggy Whitson, a record-holding NASA astronaut who has recently made a second career in the private spaceflight sector. The private astronauts will plan to perform about 60 scientific experiments during their time in orbit. As of now, seven members of Expedition 73, including three Americans, are living aboard the ISS – conducting scientific research and working to maintain the station. When will Axiom 4 launch from Florida? The Ax-4 crew are due to ride a brand-new SpaceX Dragon spacecraft to orbit, which will get off the ground with the assistance of the company's two-stage Falcon 9 rocket. The launch could happen as early as 8:22 a.m. ET Tuesday, June 10, from NASA's historic Launch Complex 39A – the site of the agency's Apollo moon mission launches. The launch window was delayed Tuesday, June 3, for the second time in a shift that NASA says will allow mission operators to avoid inclement weather and have more time to prepare the Dragon for launch. Axiom Space had originally been working toward a May 29 launch before takeoff was pushed to June 8 as part of adjustments to the space station's schedule. Once the Dragon separates from the Falcon 9 following liftoff, the capsule will continue its independent journey to the orbital outpost, where it is expected to dock by 12:30 p.m. ET Wednesday, June 11, according to NASA. Who is the crew of Axiom 4? Here's a look at the four international astronauts crewing Ax-4: Commander Peggy Whitson, a former NASA astronaut and director of human spaceflight at Axiom Space who previously commanded Ax-2 Pilot Shubhanshu Shukla, an astronaut with the Indian Space Research Organization (ISRO) Mission specialist Sławosz Uznański-Wiśniewski, a scientist and engineer from Poland who is part of the European Space Agency's reserve astronaut class Mission specialist Tibor Kapu, a mechanical engineer from Hungary