Inside the high-stakes business of tracking space junk

In a nondescript office building in the suburbs of Philadelphia, a software company is watching thousands of pieces of junk floating around in space. One mission of Analytical Graphics Inc., or AGI, is to ensure that none of that garbage comes close to colliding with the dozens of billion-dollar communications satellites orbiting Earth. Debris in space is a serious issue. Millions of pieces are already whirling around, the result of 50 years of space travel and few regulations to keep space clean. More

(Source: CNNMoney - Aug 27)