Second Spacewalk to Fix ISS Coolant Pump Underway
International Space Station (SS) astronauts Doug Wheelock and Tracy Caldwell Dyson are currently outside the ISS in a second attempt to replace an ISS coolant pump that failed. Their first attempt on Saturday ran into a roadblock when a quick disconnect fitting did not work properly, but NASA reports on its ISS website that they have successfully closed that fitting today. They now are disconnecting electrical wires and unbolting the failed pump. Follow the action live on NASA TV.
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