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The Sun Also Sets

...which is why any solar-powered airplane designed to circle the globe has to be able to fly at night, too.Switzerland's Solar Impulse team checked that off their to-do list yesterday.Next up in 2012: an Atlantic crossing in a more advanced prototype to be built next year.

© Solar Impulse
...which is why any solar-powered airplane designed to circle the globe has to be able to fly at night, too.


Switzerland's Solar Impulse team checked that off their to-do list yesterday.

Next up in 2012: an Atlantic crossing in a more advanced prototype to be built next year.

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