Fly around the world in a solar-powered plane
The trip took a very long time – 505 days to fly at 42,000 km (26,000 miles) at an average speed of around 70 km / h – but pilots Bertrand Piccard and Andre Borschberg managed to land on the Solar Impulse 2 aircraft in Abu Dhabi on Tuesday, after fly around the world using only the power of the sun. Solar Impulse 2 is a solar-powered aircraft with more than 17,000 solar cells that weigh only 2.4 tons with a wingspan of 235 feet (72 m). Technical challenges, poor flight conditions, and fragile airplanes have contributed to slow speeds. The following are pictures from the record-breaking exploration undertaken to help focus the world’s efforts to develop renewable energy sources.