FILE - In this Monday July 27, 2009 image provided by NASA, astronauts Tom Marshburn, left, and Christopher Cassidy participate in a spacewalk for maintenance tasks. On Friday, May 10, 2013, the two astronauts are preparing for a possible impromptu spacewalk to work on a leaking ammonia coolant line. The line chills power systems but power was rerouted and is operating normally. The six-member crew is not in danger. NASA will decide Friday evening if the spacewalk is needed on Saturday. (AP Photo/NASA)

Associated Press
FILE - In this Monday July 27, 2009 image provided by NASA, astronauts Tom Marshburn, left, and Christopher Cassidy participate in a spacewalk for maintenance tasks. On Friday, May 10, 2013, the two astronauts are preparing for a possible impromptu spacewalk to work on a leaking ammonia coolant line. The line chills power systems but power was rerouted and is operating normally. The six-member crew is not in danger. NASA will decide Friday evening if the spacewalk is needed on Saturday. (AP Photo/NASA)
FILE - In this Monday July 27, 2009 image provided by NASA, astronauts Tom Marshburn, left, and Christopher Cassidy participate in a spacewalk for maintenance tasks. On Friday, May 10, 2013, the two astronauts are preparing for a possible impromptu spacewalk to work on a leaking ammonia coolant line. The line chills power systems but power was rerouted and is operating normally. The six-member crew is not in danger. NASA will decide Friday evening if the spacewalk is needed on Saturday. (AP Photo/NASA)
View Comments (0)