No Ladder NeededNASA astronaut Reid Wiseman (pictured) went for a walk on October 7—a space walk.

Even astronauts need air-conditioning. Wiseman and fellow Expedition 41 crew member Alexander Gerst relocated a failed cooling pump to a storage area on the outside of the International Space Station.

The spacewalkers also installed backup power gear for robotics equipment on the orbiting lab. The 6-hour-and-13-minute effort was the first of three planned space walks for this expedition.

—By Jane J. Lee, photo gallery by Mallory Benedict and Sherry L. Brukbacher

Photograph by NASA/ESA/Alexander Gerst

Week's Best Space Pictures: Ripples Run, Astronauts Walk, and a Star Pulses

Ripples race across Mars, astronauts go for a walk, and a star pulses in this week's best space pictures.

Published October 12, 2014

Week's Best Space Pictures: Ripples Run, Astronauts Walk, and a Star Pulses

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