Skydweller is the world's largest unmanned solar-powered aircraft that can stay airborne for weeks, and even months, without refueling.

The Chinese look to be on course to compete in the solar aircraft arena, so long as they can avoid the crashes that have terminated other programs.

CALVERTON, N.Y. — A test pilot successfully flew a solar-powered prototype aircraft on Friday for a company that envisions manufacturing a fleet of drones to provide aerial internet service for ...

The Solar Impulse was configured to be piloted, however, so much of the work since then has been to unman the platform and turn it into an ultra-long endurance aircraft, Parkes said.

Solar-powered aircraft developer Skydweller Aero has completed an initial test campaign of the company’s eponymous uncrewed aerial system (UAS). The Oklahoma-headquartered firm on 30 September ...

How long do solar panels last and can you recycle them when they're dead? From government regulations to home insurance, here's what you need to know.

Science NASA scientists explain where and when the longest solar eclipse in history will be and why it will last so long Solar eclipses never fail to amaze, and this one is set to be a record-breaker.

Zero-emissions long-distance aviation is absolutely possible... Provided you're not in a hurry. Solar Airship One will take 20 days to fly all the way around the equator, some 40,000 km (~25,000 ...

In Swiss pilots' bid to travel around the world on a solar-powered plane, weight and energy are everything.

Buckle up: An unusual amount of solar activity this week could disrupt some of the most important technologies society relies on.

With this and a long list of other planned improvements, it might be possible for the Solar Dragon to charge up during the day and fly throughout the night on battery power alone.