Station Spacewalk Successful, But Probably Two More Needed
Two spacewalking astronauts successfully disconnected and removed a failed ammonia coolant pump today on the exterior of the International Space Station (ISS). Another spacewalk, no earlier than Monday, is needed to install the replacement pump and a fourth outing may be needed to clean up the worksite according to NASA.
Doug Wheelock and Tracy Caldwell Dyson spent 7 hours and 26 minutes on the spacewalk according to Spaceflightnow.com, after a record breaking 8 hours 3 minutes on Wednesday. ISS managers are anxious to get the new pump working and the ISS back to normal operations. NASA emphasized that no science samples were lost because of the problems with the ISS cooling system, but some science samples had to moved from a freezer in Japan’s Kibo module to an operating freezer elsewhere.
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