The cliché question is: How do you fly a solar-powered airplane at night? The Swiss research team behind the Solar Impulse answered with a 24-hour endurance flight last week, proving that it is ...

The 70 million-euro project has been conducting flea-hop tests since December, taking the plane no higher than 60 centimeters (2 feet) in altitude and 300 meters (1,000 feet) in distance. A night ...

H55, a technology spinoff from the worldwide, solar-powered aircraft team at Solar Impulse, has flown a two-seat electric aircraft aimed at the pilot training market. The Bristell Energic, ...

NEW YORK, NY--(Marketwired - June 15, 2016) - Today, more than 300 New York City elementary, middle- and high-school students joined Covestro and Swiss Consulate representatives at JFK International ...

Solar Impulse – the world's most-advanced solar-powered airplane – successfully completed its coast-to-coast flights across America powered only by solar energy. The plane took off from Mountain View, ...

The Swiss-made Solar Impulse plane made a smooth landing in Washington early Sunday, leaving just one more solar-powered hop to go in its cross-continent odyssey. The 208-foot-wide (63-meter-wide) ...

SAN FRANCISCO (KGO) -- The Solar Impulse 2 took off from Moffett Field this morning to continue its historic journey around the world. It's headed next to Phoenix, Arizona. RELATED: Solar Impulse 2 ...

The Swiss experimental aircraft Solar Impulse has completed its first intercontinental flight after crossing the Strait of Gibraltar and landing in Rabat, Morocco, on 5 June. The solar-powered ...

Five years after their ambitious solar powered flight project first got airborne, Bertrand Piccard and André Borschberg have entered final preparations for the first leg of a five-month, 12-stage ...