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google search
Google search results:
1: https://www.fai.org/news/8-july-2010-borschberg-breaks-first-solar-powered-aeroplane-records-onboard-solar-impulse
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2: https://www.thehindu.com/opinion/editorial/Sun-power/article16213302.ece
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3: https://www.theatlantic.com/photo/2016/07/flying-around-the-world-in-a-solar-powered-plane/493085/
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4: https://en.wikipedia.org/wiki/Solar_Impulse
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5: https://www.theguardian.com/environment/2010/jul/08/solar-impulse-24-hour-flight
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6: https://www.blue-growth.org/Blue_Growth_Technology_Innovation/Circumnavigation_World_Record_Autonomous_Expedition_Planner/Solar_Impulse_2_Andre_Borschberg_Bertrand_Piccard_Aircraft_Circumnavigation_World_Flights.htm
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7: https://www.abb-conversations.com/2016/07/solar-impulse-completes-the-first-zero-fuel-flight-around-the-world/
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8: https://safeswisscloud.com/en/blog/2003-solar-impulse/
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9: https://www.nytimes.com/2010/07/09/world/europe/09plane.html
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10: https://www.cnet.com/news/solar-plane-completes-first-24-hour-flight/
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11: https://time.com/2809004/solar-impulse-airplane/
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