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“The main requirement is for commerce to replace politics as the driving force behind space policy”

from Spaceflight Revolution by David Ashford

Cool O'Neill Colony Model

TaggedSpace

Cool O'Neill Cylinder!

Easy and very authentic.

Here's my post at SSI.org:  http://ssi.org/ssi-supermodels-part-1/



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Since 1997 a place for my stuff, and it if helps you too then all the better smithvoice.com