Airbus has completed test flights for its solar-powered Zephyr aircraft which is designed to stay airborne for weeks at a time in order to provide internet to users on the ground. The unmanned glider, which could ultimately spend around six months continuously in the air, is cheaper and more environmentally friendly than a satellite. It also could be used to monitor wildfires or oil spills. Zephyr has flown six times so far, including two stratospheric flights of 18 days each, totaling 36 days of continuous flight from only two take-offs.

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