Video: Narrated preview of Jan. 13 spacewalk

Two astronauts floated outside the International Space Station Sunday for the first in a series of spacewalks to upgrade the lab’s aging solar power system, assembling a support fixture that eventually will hold a new solar blanket.

Working outside the International Space Station, NASA astronaut Reid Wiseman and European Space Agency crewmate Alexander Gerst successfully moved a failed ammonia pump module to an external stowage platform, completing a task originally planned for a repair spacewalk last December.

Three new residents completed the final leg of their pursuit of the International Space Station, with docking to the complex at 2158 GMT (4:58 p.m. EST) Saturday, two days after blastoff from the Baikonur Cosmodrome in Kazakhstan. The Soyuz capsule carrying the U.S.-Russian-French crew linked up with the research lab’s Rassvet module.