A brand new commercial cargo ship making its orbital debut has experienced trouble with a computer data link, and its arrival at the International Space Station has been delayed at least two days.
The rendezvous was aborted less than six hours before the scheduled arrival of Orbital Sciences Corp's Cygnus capsule, packed with 590 kilograms of food and clothes for the space station crew.
The Virginia-based company said it was working on a software repair, but it would be at least two more days until another approach is attempted.
Orbital Sciences said the two orbiting vessels established direct contact early Sunday, four days after the Cygnus' launch from Virginia. But the Cygnus rejected some of the data, which interrupted the entire rendezvous. Until then, everything had been going well.
Because this is a test flight of the Cygnus, nothing valuable or urgent is on board. If necessary, it could keep orbiting the world for weeks, even months, before pulling up at the orbiting lab.
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Orbital Sciences is the second private company to launch supplies to the space station. In 2012, the California-based SpaceX began accomplishing that job for NASA.
The space agency is paying the two companies to deliver goods to the space station, in the absence of the now-retired space shuttles.
Three astronauts - an American, Italian and Russian - currently are aboard the orbiting outpost.
On Wednesday, three more crew members will be launched from Kazakhstan. Orbital Sciences will have to work around that manned flight, delaying the Cygnus further if a Tuesday hookup is not feasible.
