http://inhabitat.com/2010/04/28/japan-gears-up-to-launch-%E2%80%9Cikaros%E2%80%9D-solar-sail-spacecraft/
"Solar backpacks and sun-fueled vehicles are impressive, but a
solar-powered spacecraft just blows our minds. Japan’s Aerospace
Exploration Agency, or JAXA, plans to launch a spacecraft powered by
solar sails. The craft, appropriately dubbed Ikaros (Interplanetary
Kite-Craft Accelerated by Radiation of the Sun), will make its journey
into deep space on May 18th."
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