There is a lot of useful material in otherwise dead space junk. Now the military's wing of crazy, cool geniuses is going to build mini-satellites to go get it out. Recycling goes space age.

There is--as you may have noticed from recent reports of giant objects falling from the heavens--a lot of junk in space. But all those retired satellites contain valuable parts, and there's no reason that they should be considered trash.

So the Defense Advanced Research Projects Agency (DARPA), the government agency that plans on bringing us flying Humvees and mind-controlled prosthetic arms, has stepped in to figure out how to harvest components from dead satellites--and save the U.S. from spending excess cash and resources on brand-new ones.

The Phoenix program, launched this month, aims to robotically remove valuable parts from decommissioned satellites still in geosynchronous orbit, some 22,000 miles above Earth. Here's what DARPA envisions: a new class of nano satellites--adorably named "satlets"--could hitch a ride to orbit alongside commercial satellites.