Image:Stanford-torus-by-donald-e-davis-med.jpg
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![](/encyclopedia/images/c/c6/Stanford-torus-by-donald-e-davis-med.jpg)
Painting of a space colony design by Donald E. Davis for NASA; see http://www.donaldedavis.com/PARTS/allyours.html
Missing image PD-icon.png Public domain | This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. This applies worldwide.
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