NASA and SpaceX said Thursday they have postponed the launch of a crew of four to the International Space Station, reports AFP.
NASA said the mission was "standing down" from a scheduled Friday launch time, but did not provide a reason for the move.
In a statement it said, "Launch now is targeted at 3:27 am (local time; 07:27 GMT) Saturday, Aug. 26, for SpaceX's seventh crew rotation mission to the microgravity laboratory for NASA."
Dubbed Crew-7, the mission will be commanded by American Jasmin Moghbeli and includes Andreas Mogensen of Denmark, Satoshi Furukawa of Japan and Konstantin Borisov of Russia.
Lift-off is planned from Launch Complex 39A at NASA's Kennedy Space Center in Florida, with a backup opportunity at 3:04 am (07:04 GMT) on Sunday.
SpaceX said the new launch date provided "teams additional time to complete and discuss analysis."
It will be the first space mission for both Moghbeli and Borisov.
Crew-7 is set to be the seventh routine mission to the orbital platform for Elon Musk's SpaceX, with the first coming in 2020.
NASA pays SpaceX for the taxi service as part of a commercial crew program that it put in place to reduce dependency on Russian rockets for astronaut transport after the Space Shuttle program ended in 2011.
Boeing is the other contracted private partner, but its program remains mired in delays and technical difficulties and it has not yet flown any crew.
Borisov will be the third Russian to fly on a SpaceX Crew Dragon capsule, fixed atop a Falcon 9 rocket.
Bd-pratidin English/Golam Rosul
