Teams have shut down some noncritical systems on the station as a result of the problem , NASA said . He said the space station and crew were never in any danger . A cooling pump shut down after hitting a pressure limit . An emergency spacewalk may be necessary , but it 's too soon to tell .
He said the space station and crew were never in any danger . A cooling pump shut down after hitting a pressure limit . An emergency spacewalk may be necessary , but it 's too soon to tell .