The first solar plane aimed at reaching the stratosphere made an initial low-altitude test flight over Switzerland Friday.
Circling the globe in an aircraft that used no fuel would be enough for some to rest on their laurels, but the pilots of Solar Impulse 2 on Monday spoke of their new project.
The world's first round-the-world flight to be powered solely by the sun's energy made history on Tuesday as it landed in Abu Dhabi, where it first took off on an epic 25,000-mile (40,000-kilometer) journey that began more ...
Solar Impulse 2 was on Monday approaching the end of its epic bid to become the first sun-powered airplane to circle the globe without a drop of fuel to promote renewable energy.
The final leg of an unprecedented world tour by a solar-powered plane was postponed Saturday due to the pilot's health, he said in a message on Twitter.
Flying through the haze over the pyramids of Giza, an experimental solar-powered airplane arrived on Wednesday in Egypt as part of its globe-circling voyage.
The Solar Impulse 2 landed in Cairo on Wednesday for the penultimate stop in the solar-powered plane's world tour, two days after setting off from Spain.
The Solar Impulse 2 left southern Spain on Monday on its way to Egypt for the penultimate leg of the solar-powered airplane's landmark round-the-world journey.
Swiss adventurer Bertrand Piccard, 58, has just realised his dream of crossing the Atlantic ocean solo aboard the Solar Impulse 2 plane, with the Sun as his only source of power.
The Solar Impulse 2 landed in Spain on Thursday morning after completing a 70-hour flight from New York in the first solo transatlantic crossing in a solar-powered airplane.