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Astronauts prepare for fourth spacewalk

Flight day 10 was a light duty day for the crews of space shuttle Endeavour and the International Space Station as they prepare for the last two spacewalks of STS-123.

Image above: In the grasp of the space station's robotic Canadarm2, Dextre (center), also known as the Special Purpose Dextrous Manipulator (SPDM), is featured in this image. Credit: NASA

The astronauts are configuring tools for the fourth STS-123 spacewalk, preparing to test a repair method for the shuttle’s heat tiles – the primary task of that spacewalk – and reviewing spacewalk procedures.

STS-123 Mission Specialists Robert L. Behnken, KE5GGX, and Mike Foreman 'camped out' in the station’s Quest airlock to purge the nitrogen from their bodies in preparation for the mission’s fourth spacewalk, slated to begin at 6:28 p.m. EDT Thursday.