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Title: The Longtitude Challenge

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Subject: History
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Date: May 6, 1996
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Length: 3 / 676
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Finally two reasonable methods were presented: the Lunar-Distance method and the Chronometer method. Once and for all John Harrison?s marine chronometer solved ?the longitude problem.? Galileo first observed the moons in 1610 and 1612. He constructed charts of their movements. His observations were so accurate that he could predict their positions for the next several months...

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He constructed charts of their movements. His observations were so accurate that he could predict their positions for the next several months. In 1616 Galileo proposed to the Spanish Court a way to measure time. It could be calculated at any point on Earth, using the moons of Jupiter. His proposal was taken a lot more seriously by Holland rather than Spain...

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