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The long-awaited take-off |
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of the Solar Impulse was greeted with delight |
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by those who have spent the last seven years working on it. |
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The solar-powered plane has the wing-span of a jumbo jet, |
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but weighs less than a family car. |
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It doesn't use a single drop of aviation fuel, |
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instead its giant wings are covered with solar cells. |
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The project is the brainchild of Swiss adventurer Bertrand Piccard |
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- he sees the Solar Impulse as a sign of things to come. |