The Solar Impulse, an airplane traveling across the United States using only solar power, is in Phoenix today, after reaching Arizona from California Saturday. It took the plane about 20 hours to ...

In recent years, the development of tiny aircraft capable of staying aloft using only sunlight has captured the imagination of scientists and engineers alike. These groundbreaking innovations promise ...

MOUNTAIN VIEW, Calif. -- A solar-powered airplane landed in California on Saturday, completing a risky, three-day flight across the Pacific Ocean as part of its journey around the world. A ...

A solar-powered plane on an around-the-world journey was about a third of the way to California early Friday after taking off from Hawaii, the project's mission control said. Solar Impulse 2 pilot ...

Add Yahoo as a preferred source to see more of our stories on Google. Swiss pilot Raphaël Domjan soared more than 31,000 feet above the Alps using nothing but sunlight, appearing to shatter the ...

A solar-powered airplane has landed in Pennsylvania, about 17 hours after it took off from the Ohio hometown of America aviation pioneers Wilbur and Orville Wright. The Swiss-made Solar Impulse 2 ...

A solar-powered airplane has touched down in the Ohio hometown of two of America's most well-known aviation pioneers on the latest leg of its around-the-world journey. The Swiss-made Solar Impulse 2 ...

The pilot of a solar-powered airplane on an around-the-world journey said Saturday that stopping in California's Silicon Valley will help link the daring project to the pioneering spirit of the area.

The world's first solar powered aircraft completed a major milestone today when it completed an overnight flight for the first time. The Solar Impulse HB-SIA, with André Borschberg at its controls, ...