take a look now. we re showing you a shot of nasa there as they are monitoring two astronauts this hour who are out in space on a hastily planned space walk. they re trying to find and fix a look at the international space station. plates of frozen ammonia were spotted on thursday drifting from the long frame that hold the solar panels on the left side. so far, though, the astronauts have not spotted any damage from on the pump that they think is leaking at this time from the ammonia. nasa saying that the leak while significant at this moment poses no safety threat. we ll continue to update the story throughout the newscast.
that space station. we re taking a look at the dramatic picture. of course as you point out, this was a hastily arranged space walk. anything could go wrong because nasa s not used to taking chances like this. they normally rehearse and do space walks with lots of information. how did you know that there was actually a problem? how did they find that leak? reporter: it was crew members on board the international space station, about 255 miles above the earth, who sow what flakes floating by in space. looked like snowflakes. this was bits of ammonia that had frozen there. there have been problems with ammon ammonia, so of it surmised that could be the problem. the two astronauts really are prepared to hastily exit and make repairs. that is part of the training for anything like this which could go suddenly wrong. so there is training to respond to this. and also in houston, astronauts