Bad weather in California forced a postponement of the launch of a SpaceX rocket that is to carry a satellite into space, the satellite company said.
The flight was postponed until Saturday, Iridium Communications said on Twitter. The company said high winds and rain on Sunday at Vandenberg Air Force Base in southern California forced the postponement.
The private space flight company SpaceX said other "range conflicts" during the week made Saturday the earliest possible launch date.
The launch time is set for 9:54 am (1754 GMT), with the following day set as backup.
The flight is to mark the return to space for SpaceX after one of its Falcon 9 rockets exploded on September 1 during launch, destroying the rocket and its satellite payload.
SpaceX founder Elon Musk has said the rocket is ready, having completed its static firing test on Thursday.