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- From: bj368@cleveland.Freenet.Edu (Mike E. Romano)
- Newsgroups: sci.astro
- Subject: Space Poop
- Date: 2 Sep 1992 23:09:17 GMT
- Organization: Case Western Reserve University, Cleveland, Ohio (USA)
- Lines: 23
- Message-ID: <183hitINNl9o@usenet.INS.CWRU.Edu>
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-
-
- Since 1957 more than 3,300 launches have produced 7,000 trackable
- objects currently in orbit, equalling approx 3000 tons of man made
- material.
- Of these 7000 catalogued objects, the US and USSR have produced approx
- 3300 each. The rest are from Europe and other countries.
- Of the 7000 objects, only 400 are operational satellites.
- The rest of this number include abandoned or non functioning satellites,
- upper stages, and fragments including lens covers, separation bolts,
- and clamp bands.
- Further, there are from 30,000 to 70,000 smaller objects greater than
- 1 cm which have not been catalogued. Any pieces in this size range
- can damage spacecraft.
- Objects above the geo stationary orbit of 1000 km will remain there
- for 1000 years, orbitting the earth 5 million times, posing a constant
- risk of collision.
-
- Interactive collisions in earth orbits will eventually generate sufficient
- debris to creat a dense Debris Belt and prevent further launchings.
- Some scientists predict that sufficient debris will begin to reduce
- solar radiation and thereby affect global climate.
- --
- Mike Romano Univ. Calif. Berkeley
-