Watch the Skies For Junk

[LARRY KLAES]

Watch the Skies… For Junk

As head of NASA's Orbital Debris Program Office, Nicholas L. Johnson keeps 
tabs on deadly flying garbage, aka space junk.

By Amos Kenigsberg

June 05, 2006 | Astronomy & Physics

http://www.discover.com/web-exclusives/spacejunk/

How much junk is out there?

For things bigger than 10 centimeters, there are about 8,000. Things that 
are larger than 1cm, we're talking a few hundred thousand. If you're talking 
things larger 1mm, we're talking a hundred million.