MOUNTAIN VIEW, Calif. - Bertrand Piccard was flying from Morocco to Spain last year - finishing up another highly successful test of Solar Impulse, the revolutionary airplane he helped design that ...

Germany’s bid to build one of the world’s most advanced uncrewed solar aircraft has just taken a major leap forward, after the German Aerospace Center (DLR) revealed that HAP-alpha has successfully ...

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 ...

On a summer afternoon high above the Swiss Alps, Raphaël Domjan stared out at a commercial airliner flying below him. At 9,500 meters (31,000 feet), Domjan was alone in a featherlight aircraft powered ...

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 ...

Latest flight trials take the British-built PHASA-35 High Altitude Pseudo Satellite (HAPS) a step closer to operations in the stratosphere. A British-led team of engineers has taken a leap forward in ...

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 ...

NEW YORK -- The solar-powered airplane on a globe-circling voyage that began more than a year ago in the United Arab Emirates reached a milestone Saturday, completing a trip across the United States ...

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, ...