Veteran pilot tested to the limit of endurance on record-breaking solar-powered flight across the Pacific, on the eighth leg of round-the-world journey 
 
 A solar plane attempting the world’s first flight around the globe has landed in Hawaii, after breaking the record for the longest non-stop solo flight in history. At 72 hours into the eighth leg of its 22,000-mile circumnavigation, Borschberg broke the endurance record for a solo flight. The Solar Impulse 2 approaches Hawaii with Andre Borschberg at the controls, near Kalaeloa Airport, O'ahu, Hawaii, on July 3, 2015. During the 5,079-mile leg, Borschberg has spent about four days, 21 hours and 51 minutes in the air and throughout the journey has only been able to rest in 20-minute intervals. André Borschberg (@andreborschberg) During the fourth day I felt very tired, having climbed the equivalent altitude of Mount Everest four times pic.twitter.com/N6Wk1vi9ok 
 
 It had been stalled in Nagoya for weeks due to bad weather, waiting for a suitable five-day window of clear weather to complete the journey. The historic journey has been set back multiple times since first taking off from Abu Dhabi in March. Solar Impulse 2, piloted by the Swiss pilot André Borschberg, took off from Nagoya in Japan at 3am on Monday, for the five-day crossing of the Pacific Ocean, the riskiest leg of its journey. Contributing: Doyle Rice 
 
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– A solar plane made aviation history today, and its historic journey is nowhere near over. The Solar Impulse 2, controlled by Swiss pilot André Borschberg, landed in Hawaii after a five-day, 4,000-mile trip over the Pacific Ocean from Japan, reports USA Today. The feat is just one leg on a planned around-the-world trip, but the non-stop stretch over the Pacific was seen as the most difficult, and dangerous, part of the flight. It set the record for the longest solar-powered flight in terms of both time and distance. Waiting to greet Borschberg at the Kalaeloa Airport were his family and his co-pilot, Bertrand Piccard, who will now fly the plane on its next leg, a 100-hour trip to Phoenix. The 62-year-old Borschberg had to make do with 20-minute naps in the cramped cockpit over his five-day trip, and at times, he sweated through 100-degree temperatures, reports the Guardian. He tweeted along the way, crediting yoga for helping his mental and physical stamina, especially yesterday, when he “climbed the equivalent altitude of Mount Everest four times." CNN explains that the aircraft is covered in 17,000 solar cells, which collect the sun's rays during the day and allow the plane to fly through the night on battery power.