Astronauts from India, Poland, Hungary return with US veteran from ISS
A SpaceX Crew Dragon capsule carrying the four-member team parachuted into the sea off the coast of California at about 9.30am GMT after a fiery re-entry through Earth's atmosphere that capped a 22-hour descent from orbit.
The return flight concluded the fourth ISS mission organised by Texas-based start-up Axiom Space in collaboration with SpaceX, the private rocket venture of South African-born billionaire Elon Musk headquartered near Los Angeles.
The mission finale, return flight was carried live by a joint SpaceX-Axiom webcast.
Two sets of parachutes, visible through the darkness with infrared cameras, were expected to slow the capsule's final descent to about 24km/h moments before its splashdown off San Diego.
Minutes earlier, the spacecraft had been streaking like a mechanical meteor through Earth's lower atmosphere, generating enough frictional heat to send temperatures outside the capsule soaring to 1,927°C. The astronauts' flight suits are designed to keep them cool as the cabin heats up.
The Axiom-4 crew was led by Whitson, 65, who retired from Nasa in 2018 after a pioneering career that included becoming the US space agency's first female chief astronaut and the first woman to command an ISS expedition.
Now director of human space flight for Axiom, she had logged 675 days in space, a US record, during three previous Nasa missions and a fourth flight to space as commander of the Axiom-2 crew in 2023. Her latest mission commanding Axiom-4 will extend her record by about three more weeks.
Rounding out the Axiom-4 crew were Shubhanshu Shukla, 39, of India, Slawosz Uznanski-Wisniewski, 41, of Poland, and Tibor Kapu, 33, of Hungary. They are returning with a cargo of science samples from more than 60 microgravity experiments conducted during their 18-day visit to the ISS and due for shipment to researchers on Earth for final analysis.
For India, Poland and Hungary, the launch marked the first human space flight of each country in more than 40 years and the first mission to send astronauts from their government's respective space programmes to the ISS.
The participation of Shukla, an Indian air force pilot, is seen by India's space programme as a precursor of sorts to the debut crewed mission of its Gaganyaan orbital spacecraft, planned for 2027.
Uznanski-Wisniewski is a Polish astronaut assigned to the European Space Agency, while Kapu is part of his country's Hungarian to Orbit (HUNOR) programme, though he is not the first person of Hungarian descent to board the space station.
Billionaire Charles Simonyi, a Hungarian-born software designer who became a US citizen in 1982, has twice visited the ISS as a space tourist, in 2007 and 2009, hitching rides aboard Russian Soyuz capsules. But like many wealthy individuals from various countries who have paid their own way for joyrides to space, Simonyi was not flying on behalf of his homeland or any government.
Dubbed 'Grace' by its crew, the newly commissioned capsule flown for Axiom-4 was launched from Nasa's Kennedy Space Centre in Cape Canaveral in Florida on June 25, becoming the fifth vehicle in SpaceX's Crew Dragon fleet.
The Ax-4 team arrived at the ISS on June 26, welcomed aboard by the station's latest rotating crew of seven occupants — three US astronauts, one Japanese crewmate and three Russian cosmonauts. The two crews parted company again early on Monday when Crew Dragon Grace undocked to begin its voyage home.
Axiom-4 also marks the 18th crewed space flight logged by SpaceX since 2020, when Musk's rocket company ushered in a new Nasa era by providing American astronauts their first rides to space from US soil since the end of the space shuttle programme nine years earlier.
For Axiom, a nine-year-old venture cofounded by Nasa's former ISS programme manager, the mission builds on its business of putting astronauts sponsored by private companies and foreign governments into low-Earth orbit.
Axiom also is one of a handful of companies developing a commercial space station of its own intended to eventually replace the ISS, which Nasa expects to retire in about 2030.
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