Astronauts Conduct 2nd of 3 Spacewalks - Small amounts of toxic ammonia leaked from a fluid line Sunday as two astronauts conducted the second of what could be a precedent-setting three spacewalks in nine days, upgrading the international space station's cooling system.
The ammonia flakes did not appear to make contact with Michael Lopez-Alegria or Sunita Williams. Mission Control told the astronauts to continue their task of hooking up ammonia fluid lines from a temporary cooling system to a permanent one.
The astronauts looked over their spacesuits, gloves and helmets and found no ammonia residue.
"I think we're happy with what we see," Lopez-Alegria said.