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Solar powered plane

Solar Impulse members prepare the airplane of German test pilot Markus Scherdel, who will steer the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight in Payerne, Switzerland April 7, 2010. The propeller plane, with a 61 metres (200 feet) wingspan, is powered by four electric motors and designed to fly day and night by saving surplus energy from its 12,000 solar cells in high-performance batteries. ...more

Solar Impulse members prepare the airplane of German test pilot Markus Scherdel, who will steer the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight in Payerne, Switzerland April 7, 2010. The propeller plane, with a 61 metres (200 feet) wingspan, is powered by four electric motors and designed to fly day and night by saving surplus energy from its 12,000 solar cells in high-performance batteries. REUTERS/Fabrice Coffrini/Pool

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A helicopter flies over the solar-powered Solar Impulse HB-SIA prototype airplane steered by German test pilot Markus Scherdel, during his first flight over Payerne April 7, 2010. The flight follows six years' work by 50 engineers and technicians led by Swiss adventurer Bertrand Piccard on the so-called Solar Impulse project. REUTERS/Ruben Sprich

A helicopter flies over the solar-powered Solar Impulse HB-SIA prototype airplane steered by German test pilot Markus Scherdel, during his first flight over Payerne April 7, 2010. The flight follows six years' work by 50 engineers and technicians led by Swiss adventurer Bertrand Piccard on the so-called Solar Impulse project. REUTERS/Ruben Sprich

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German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Fabrice Coffrini/Pool

German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Fabrice Coffrini/Pool

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German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight in front of the Swiss Alps April 7, 2010. REUTERS/Christian Hartmann

German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight in front of the Swiss Alps April 7, 2010. REUTERS/Christian Hartmann

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German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

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German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

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German test pilot Markus Scherdel, steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight in front of the Swiss Alps April 7, 2010. REUTERS/Christian Hartmann

German test pilot Markus Scherdel, steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight in front of the Swiss Alps April 7, 2010. REUTERS/Christian Hartmann

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German test pilot Markus Scherdel, steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Ruben Sprich

German test pilot Markus Scherdel, steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne April 7, 2010. REUTERS/Ruben Sprich

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German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne air base April 7, 2010. REUTERS/Christian Hartmann

German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane during his first flight over Payerne air base April 7, 2010. REUTERS/Christian Hartmann

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German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane touch down after his first flight over Payerne April 7, 2010. REUTERS/Pool/Fabrice Coffrini

German test pilot Markus Scherdel steers the solar-powered Solar Impulse HB-SIA prototype airplane touch down after his first flight over Payerne April 7, 2010. REUTERS/Pool/Fabrice Coffrini

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Bertrand Piccard (R), pilot and president of Solar Impulse and Andre Borschberg (L), CEO and pilot of the company, congratulate German test pilot Markus Scherdel, after solar-powered Solar Impulse HB-SIA prototype airplane's first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

Bertrand Piccard (R), pilot and president of Solar Impulse and Andre Borschberg (L), CEO and pilot of the company, congratulate German test pilot Markus Scherdel, after solar-powered Solar Impulse HB-SIA prototype airplane's first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

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Solar Impulse crew members pose for photographers in front of solar-powered Solar Impulse HB-SIA prototype airplane after his first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

Solar Impulse crew members pose for photographers in front of solar-powered Solar Impulse HB-SIA prototype airplane after his first flight over Payerne April 7, 2010. REUTERS/Christian Hartmann

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