Technical troubles hold up International Space Station repairs
Monday, August 9, 2010 A faulty ammonia line fitting delayed repairs to a cooling pump on the International Space Station Saturday during an eight-hour spacewalk. During the spacewalk, astronauts Doug Wheelock and Tracy Caldwell Dyson were to repair a faulty cooling system, which failed on July 31. The faulty cooling unit was to be swapped with a new one that was previously in storage to solve the problem; however, an ammonia leak in the final…