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혜성 - 위키백과, 우리 모두의 백과사전 On p 44, Clairaut predicts that Halley's comet would return in mid April 1759 From p 44 (translated from French): " it seems to me that the expected comet must pass its perihelion towards the middle of next April "
Comet | Definition, Composition, Facts | Britannica Comet, a small body orbiting the Sun with a substantial fraction of its composition made up of volatile ices Comets are among the most-spectacular objects in the sky, with their bright glowing comae and their long tails
Comets - Science@NASA When a comet's orbit brings it close to the Sun, it heats up and spews dust and gases into a giant glowing head larger than most planets The dust and gases form a tail that stretches away from the Sun for millions of miles
What is a comet? - BBC Sky at Night Magazine Simply put, a comet is a large body of ice and dust orbiting the Sun, sometimes seen as a bright object in the sky with a long tail streaming behind it Wanderers of the Solar System, comets can rank among the most spectacular of astronomical sights when they appear in our skies