Bok
08-26-2011, 06:19 PM
Once futuristic visions, solar sails now take off
More... (http://www.sciencenews.org/view/feature/id/333656/title/Flying_on_Sunshine)
More... (http://www.sciencenews.org/view/feature/id/333656/title/Flying_on_Sunshine)
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