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An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (in the celestial sphere), consisting of a spherical framework of rings, centred on Earth, that represent lines of celestial longitude and latitude and other astronomically important features such as the ecliptic. As such, it differs from a celestial globe, which is a smooth sphere whose principal purpose is to map the constellations. Read more on wikipedia.

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An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (in the celestial sphere), consisting of a spherical framework of rings, centred on Earth, that represent lines of celestial longitude and latitude and other astronomically important features such as the ecliptic. As such, it differs from a celestial globe, which is a smooth sphere whose principal purpose is to map the constellations.

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Antique Celestial Sphere Print Astronomy Chart Northern Hemisphere Stars Constellations

Antique Celestial Sphere Print Astronomy Chart Northern Hemisphere Stars Constellations. $16.00, via Etsy.

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The Earth the celestial sphere.” Illustrated common school astronomy. 1857

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Atlas and his brother Menoetius sided with the Titans in their war against the Olympians, the Titanomachy. His brothers Prometheus and Epimetheus weighed the odds and betrayed the other Titans by forming an alliance with the Olympians. When the Titans were defeated, many of them (including Menoetius) were confined to Tartarus, but Zeus condemned Atlas to stand at the western edge of (the Earth) and hold up (the Sky) on his shoulders, to prevent the two from resuming their primordial embrace.

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Astronomy Print Antique Celestial Sphere Terrestrial Globe Sky