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Smart Glass Steers Solar Sail in Space (Video)

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smart glass space image
Image via New Scientist

Japan's IKAROS spacecraft is a pioneering technology for solar sailing. The ship launched in May and is the first one to be propelled entirely by sunlight. It manages to steer itself by using just the pressure of sunlight on "smart glass." Check out a video of the sail in movement. ...Read the full story on TreeHugger