Aviation history is in the making -- no fossil fuels necessary. Solar Impulse 2, the revolutionary airplane powered exclusively by sunlight, is about to depart on the longest leg of its around-the-world journey. The 4,000-mile flight from Japan to Hawaii will kick off as soon as weather permits. Because the aircraft's maximum speed is only 90 mph and it typically flies even slower to conserve energy, the non-stop journey is predicted to take four to five days. A Boeing 777, with a top speed of a...
Aviation history is in the making -- no fossil fuels necessary. Solar Impulse 2, the revolutionary airplane powered exclusively by sunlight, is about to depart on the longest leg of its around-the-world journey. The 4,000-mile flight from Japan to Hawaii will kick off as soon as weather permits. Because the aircraft's maximum speed is only 90 mph and it typically flies even slower to conserve energy, the non-stop journey is predicted to take four to five days. A Boeing 777, with a top speed of a...
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