U.S. astronauts perform seven-hour spacewalk outside station

Two U.S. astronauts sailed through a seven-hour spacewalk outside the International Space Station.

Two U.S. astronauts sailed through a seven-hour spacewalk outside the International Space Station on Thursday to pack up a spare cooling radiator and tackle other maintenance, a NASA TV broadcast showed.

In their second spacewalk in two weeks, Commander Jeffrey Williams and Flight Engineer Kate Rubins left the station's airlock around 8 a.m. EDT (1200 GMT) as the station orbited 250 miles (400 km) above Earth.