AERONAUTICS: Cephenemyia

Will man ever fly around the earth between sunup and dusk? It sounds dubious; but 25 years ago it seemed dubious that he would fly at all.

If he chose to follow the 40th parallel (New York City) around, he would have 13,855 miles to go. If he picked one of the long summer days of the year, he would have about 17 hours in which to get back to his starting point before-daylight left it. He would have to cover 815 miles an hour, or 13% miles a minute, or nearly 400 yards...

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