Add Yahoo as a preferred source to see more of our stories on Google. The Solar Impulse Foundation sold the aircraft to Skydweller Aero in 2019, marking a dramatic mission shift from renewable energy ...

Add Yahoo as a preferred source to see more of our stories on Google. 'Solar Impulse 2' completed its circumnavigation of the planet, which included a flight over Giza's pyramids, in 2016.

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 ...

This is the longest duration flight ever made. An application has been made in order to establish that this is the new record. This maiden flight of the Zephyr is said to have proven the system’s ...

The Navy, working with Skydweller Aero, just reached a major milestone in clean-energy aviation. Its solar-powered drone, known as Skydweller, flew for 73 hours straight without needing fuel. The test ...

Humanity has always dreamed of creating a kind of aircraft that’s capable of staying airborne indefinitely. Ok, maybe not humanity per se, but those of us who are into waging war or protecting borders ...

Solar Flight has unveiled the SunStar, a solar-powered airplane designed as an unmanned "atmospheric satellite" for long-endurance telecommunications. The SunStar can remain in flight for months, ...

From an airstrip just north of Interstate 10 on the Mississippi Gulf Coast, an aviation company recently launched an unmanned plane for a three-day flight, an important milestone on its quest for ...

The aircraft that completed one of aviation’s most audacious journeys — a solar-powered circumnavigation of the globe — has met its end at the bottom of the Gulf of Mexico. Solar Impulse 2 crashed ...