The world’s longest flight spent more than two months in the air
By Jacopo Prisco, CNN Late last August, a solar-powered drone called Zephyr almost beat one of aviation’s most enduring records. The unmanned aircraft, operated by the US Army and produced by Airbus, flew for 64 days, 18 hours and 26 minutes before unexpectedly crashing down in Arizona — just four hours shy of breaking the
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