Solar plane completes 'milestone'
Published 04/05/2013 | 10:02
A solar-powered plane has completed the first leg of a planned cross-country trip.
The Solar Impulse landed in Phoenix, Arizona, after flying several hours after sundown in a flight 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 on Friday.
Its creators said the trip is the first attempt by a solar plane capable of flying day and night without fuel to fly across America.
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