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 journey more than a year ago.

Flying low over haze-covered Pyramids in Giza, an experimental solar-powered airplane arrived on Wednesday in Egypt as part of its globe-circling voyage.

A solar-powered plane took off from Japan early Monday to attempt a five-day flight over open water to Hawaii, the eighth leg of its bid to fly around the world without fuel.