The Comet ISON is visible to the naked eye

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The comet (known also as C/2012 S1) will come to its closest approach to the Sun on November 28, 2013, at a distance of 1,860,000 kilometers from the center point of the Sun, passing at approximately 1,165,000 km above the Sun’s surface. It is now at 80 million kilometers from the Sun, currently moving at about 50 km / sec, but the speed will increase soon at 600 km / sec.
Some similarities between its orbital elements and those of the Great Comet of 1680 suggest that there might be a connection between them. Because of the strong proximity to the Sun, NASA issued three possibilities for this comet’s evolution in a short term: the comet can spontaneously break up sometime in the middle of November, it can be destroyed by the Sun’s heat or it makes it away from the Sun.

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