Solar Powered Plane Travels Across the United States

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Solar Powered Plane Travels Across the United States
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An airplane has flown across the United States, powered only by sunlight. The impressive feat was made possible by improvements in solar cell and battery technology.

Solar Airplane About to Be Pushed to the Limit

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Solar Airplane About to Be Pushed to the Limit
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The plane looks like something you might install on your roof, although if all goes well during test flights over the San Francisco Bay Area that begin next week, it won't actually end up there. It's basically a giant wing with a glider's fuselage and a Port-A-Potty attached.