ISS Astronauts Preparing Emergency Spacewalk to Fix Critical System

Yesterday, astronauts aboard the International Space Station noticed odd flakes floating about outside , which turned out to be ammonia leaking out of the radiator lines of the space station's power system. Now, after a day of deliberation, it turns out two astronauts will leave the ISS, and brave the great abyss to try to fix the problem. Uh oh.