The Pentagon's massive new telescope is designed to track space junk and watch out for killer asteroids

The Washington Post: There are a lot of rocks flying around through space. Lots of debris, too. Old satellites, spent rocket boosters, even for a short while a spatula that got loose during a space shuttle mission in 2006. All of it swirling around in orbit, creating a bit of a traffic jam.

For years, the Pentagon has been worried about the collisions that might be caused by an estimated 500,000 pieces of debris, taking out enormously valuable satellites and, in turn, creating even more debris. On Tuesday, the Defense Department took another significant step toward monitoring all of the cosmic junk swirling around in space, by delivering a gigantic new telescope capable of seeing small objects from very far away.

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