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The term "comet" derives from the Greek word "kometes," meaning 'the hairy one'. Historical records of comet observations date back to around 1000 BC in China and Chaldea. Early natural philosophers, such as the Pythagoreans, viewed comets as "wandering" planets. Aristotle later classified them as lowly phenomena, describing them as exhalations in the upper atmosphere. This ongoing exploration of cometary nature reflects mankind's enduring curiosity about these celestial bodies. Explore the evolution of comet understanding through the ages.
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Comets By: Christian Moreno, Kamryn Johnson, Emily McDonald
The word “comet” now used in all European languages , comes from the Greek word kometes meaning ‘the hairy one, but the earliest extant records of cometary observations date from around -1000 in China and probably from about the same time in Chaldea (around present-day Iraq). Ideas about the true nature of comets are available from the time of the rise of Hellenistic natural philosophy at about -550 when the Pythagoreans considered comets to be a kind of (wandering) planets that were seen rather infrequently and mostly near the horizon in the morning or evening sky. Aristotle in his Meteorology (ca. -330) relegated comets to the lowest, `sub lunar' sphere in his system of spherical shells and described them as `dry and warm exhalations' in the upper atmosphere. HistoryOf comets
Sources http://www.eso.org/public/events/astro-evt/DeepImpact/Background/comet-history-1.html