Revision history of "Category:Planetary Engineering"

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  • (cur | prev) 11:19, 12 December 2007‎ Ben (Talk | contribs)‎ . . (191 bytes) (+191)‎ . . (New page: Enormous solar sails may be used in the far future to alter planets. Sunlight may be focused or deflected away by enormous sails to warm or cool a planet's climate. [[Category:Application...)
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