Solar drone with jumbo jet wingspan broke a flight record—then it crashed

A solar-powered drone has been lost at sea after a record-breaking flight lasting eight days between late April and early May. The crash also marks the untimely demise of the pioneering aircraft Solar Impulse 2, which previously performed the world’s first solar-powered crossings of the Atlantic and Pacific oceans before becoming an uncrewed test platform for US military missions. The carbon-fiber aircraft could perform such feats of aeronautical endurance while running solely on renewable energ