Over its entire mission, Solar Impulse 2 cruised at altitudes of up to 9,000 metres and at an average speed of between 45 and 90 km per hour. A solar-powered aircraft successfully completed the first fuel-free flight around the world on Tuesday, returning to Abu Dhabi after an epic 16-month voyage and demonstrating the potential of renewable energy. The plane, Solar Impulse 2, touched down in the United Arab Emirates capital at 0005 GMT (0405 local time) on Tuesday. IMAGE: Solar Impulse 2, ... Rediff.com, 1 month ago
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