In this image provided by NASA the International Space Station is shown with the backdrop of Earth. The image was photographed by an STS-132 crew member on space shuttle Atlantis after the station and shuttle began their post-undocking relative separation on May 23, 2010. The astronauts aboard the International Space Station dimmed the lights, turned off unnecessary equipment and put off science work Thursday Dec. 12, 2013 as NASA scrambled to figure out what's wrong with one of two identical cooling loops that shut down Wednesday. (AP Photo/NASA)
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