This computer generated graphic provided by NASA shows images of objects in 

This computer generated graphic provided by NASA shows images of objects in Earth orbit that are currently being tracked.  Space junk has made such a mess of Earth's orbit that experts say we may need to finally think about cleaning it up. That may mean vacuuming up debris with weird space technology _ cosmic versions of nets, magnets and giant umbrellas, according to the chairman of an expert panel that issued a new report on the problem Thursday. (AP Photo/NASA)
Associated Press
This computer generated graphic provided by NASA shows images of objects in Earth orbit that are currently being tracked. Space junk has made such a mess of Earth's orbit that experts say we may need to finally think about cleaning it up. That may mean vacuuming up debris with weird space technology _ cosmic versions of nets, magnets and giant umbrellas, according to the chairman of an expert panel that issued a new report on the problem Thursday. (AP Photo/NASA)
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