From: utzoo!decvax!cca!A.exp@Berkeley@sri-unix Newsgroups: net.space Title: Article-I.D.: sri-unix.3272 Posted: Tue Sep 14 17:10:51 1982 Received: Thu Sep 16 01:10:20 1982 Subject: Independent space colonies It is incorrect to say space colonies can not be independent of earth. It could be done within 20 years. If interested, it would be to the reader's advantage to find the references himself. For an estimate of the percentage of the GNP that could be supplied by space industry using extraterrestvial material in this period of time or about 10 years beyond, see the appropriate NASA documents.