Solar-powered plane could fly forever without refueling

07/8/2010 | National Public Radio

A solar-powered airplane has completed a 24-hour test flight, using its solar cells to recharge its batteries during the day. The test flight shows that the plane, which has 12,000 solar cells installed along its 207-foot wingspan, could theoretically stay in the air indefinitely without needing to refuel, researchers said. The project leader said the flight ushered in "a new era where people understand that with renewable energy you can do impossible things."

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