NASA said the station fired its thrusters Thursday afternoon, moving up about half a mile, to avoid some parts from an old Ariane (a-ree-AN') 5 rocket. The European Space Agency launches Ariane rockets out of South America.
The junk would have come within 1,040 feet of the outpost. NASA said the six man crew was never in danger.
NASA spokesman Kelly Humphries said the space agency has had to consider sidestepping space junk dozens of times since the outpost was launched in 1998, sometimes canceling the orbital dodge at the last moment.
The station moved on March 16 to avoid an old Russian weather satellite part.