Emergency Spacewalk
04:25, 19 May 2013
LONDON. May 19.KAZINFORM Flight engineers on the International Space Station (ISS), including U.S. astronaut Chris Cassidy (pictured), completed a 5.5-hour spacewalk on May 11 to repair a leaky coolant pump, National Geographic Daily News reports.
The pump provides ammonia coolant to systems on the ISS responsible for generating electricity for the station.
The leak was initially discovered on May 9 by Canadian astronaut Chris Hadfield , who reported seeing flakes coming off the ISS. (Related: "Serious Space Station Leak Provokes Weekend Spacewalk." )