Christmas Eve spacewalk PHOTOS

<div class="meta image-caption"><div class="origin-logo origin-image "><span></span></div><span class="caption-text">Two space station astronauts popped in a new pump during a rare Christmas Eve spacewalk Tuesday, eager to wrap up urgent repairs to a cooling system.  (WLS Photo)</span></div>
December 24, 2013 9:38:24 AM PST