Solar Impulse takes off from Oman on the second leg of what its pilots hope will be a record-breaking journey into aviation history.
In this hand out image supplied by Jean Revillard, Solar Impulse 2, a solar-powered airplane, takes flight as it begins its historic round-the-world journey from Al Bateen Airport, on March 09, 2015 from Abu Dhabi, UAE. The 35,000km journey is expected to last five months and is piloted by Andre Borschberg and Bertrand Piccard of Switzerland. The Solar Impulse 2 is equipped with 17,000 solar cells, has a wingspan of 72 metres, and yet weighs just over 2 tonnes. (Getty Images)