PHOENIX (AP) -- A solar-powered airplane landed in Phoenix early Saturday morning after flight from California.
The Solar Impulse set down about 12:30 a.m. at Sky Harbor Airport after flying several hours after sundown to complete the first leg of a planned cross-country trip that its co-pilot described as a "milestone" in aviation history.
The Solar Impulse -- considered the world's most-advanced sun-powered plane -- left Moffett Field in Mountain View near San Francisco just after dawn Friday.
Its creators said the trip is the first attempt by a solar airplane capable of flying day and night without fuel to fly across America.
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