The International Space Station had to drift with reduced power following a docking drama. A cargo ship carrying 2.5 tons of food and other supplies failed to connect properly with the outpost when it arrived from Kazakhstan.
Flight controllers suspected that an antenna on Progress had failed to retract as commanded. But after three and a half hours they decided a software error was to blame and the cargo ship docked properly.
During the emergency, astronauts Commander Mike Lopez-Alegria, Mikhail Tyurin and Thomas Reiter powered down non-essential equipment to conserve electricity. But Nasa stressed that they were in no danger during the incident.
On Friday the men were due to open the hatch to unload food, fuel, oxygen and gifts from their families.