From: utzoo!decvax!genradbo!grkermit!earle Newsgroups: net.space Title: Re: Saving the Shuttle External Tank - Correction Article-I.D.: grkermit.306 Posted: Wed Mar 16 09:12:48 1983 Received: Wed Mar 23 00:34:13 1983 References: grkermit.305 The article I referred to was in the February 1983 issue of L-5 News, not Space World as I said yesterday. For a 200 km. orbit, the ET decays in almost no time at all, but if you can get it into a 500 km. orbit its "natural" life will be up to about 5 1/2 years, but with tethered minimum drag orientation that goes to over 35 years! To give credit where it is due, the L-5 News article was by David Brin. Earle T. Fettig GenRad Concord, MA