The 236-ft. wingspan on the Solar Impulse 2 is wider than a Boeing 747's. Flying both day and night, the 3-month, sun-powered voyage will take some tricky maneuvering.
The 236-ft. wingspan on the Solar Impulse 2 is wider than a Boeing 747's. Flying both day and night, the 3-month, sun-powered voyage will take some tricky maneuvering.
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