(AP) - A solar-powered airplane has taken off from California for Arizona, the latest leg of its journey around the world using only energy from the sun.
The Swiss-made Solar Impulse 2 took off from Mountain View shortly after 5 a.m. Monday for an expected 16-hour flight to Phoenix.
Swiss pilot Andre Borschberg is at the helm of the plane that began circumnavigation the globe last year.
Borschberg's co-pilot, Bertrand Piccard, also of Switzerland, made the three-day trip from Hawaii to the heart of Silicon Valley, where he landed last week.
The Solar Impulse 2's wings are equipped with 17,000 solar cells that power propellers and charge batteries.
After Phoenix, the plane will make two more stops in the United States before crossing the Atlantic.
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