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Celatone
Sign in to savethumb|Using a celatone. thumb|Celatone by Matthew Dockrey. Museum at the Royal Observatory, Greenwich, UK. The celatone was a device invented by Galileo Galilei to observe Jupiter's moons with the purpose of finding longitude on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.
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thumb|Using a celatone. thumb|Celatone by Matthew Dockrey. Museum at the Royal Observatory, Greenwich, UK. The celatone was a device invented by Galileo Galilei to observe Jupiter's moons with the purpose of finding longitude on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.
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Galileo Galilei
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International Standard Book Number
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telescope
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longitude
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list of moons of Jupiter
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Galilean moons
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Galileo mission
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Royal Observatory
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Galilean transformation
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Pisa International Airport “Galileo Galilei”
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observational astronomy
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Vincenzo Galilei
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Dialogue Concerning the Two Chief World Systems
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Galileo thermometer
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Galilean invariance
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Sidereus Nuncius
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Life of Galileo
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Galileo affair
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Museo Galileo
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