IN FLIGHT - JULY 25: In this handout image supplied by Jean Revillard, Swiss pioneer Bertrand Piccard takes a selfie during the last leg of the round the world trip with Solar Impulse 2 over the Arab peninsula prior to the landing in Abu Dhabi to finish the first around the world flight without the use of fuel on July 25, 2016 in Abu Dhabi, UAE. The The 42,000 km journey was completed in 17-stages across four continents. The Solar Impulse 2 is equipped with 17,000 solar cells, has a wingspan of 72 metres, and yet weighs just over 2 tonnes. (Photo by Jean Revillard/Solar Impulse2 via Getty Images)
