Coming two comets visible to the naked eye
Every year we can see with telescopes several comets and from Thursday [07/03] we can see with the naked eye a comet that is approaching to the Sun, and in November another comet could put on a show with his long tail lit by sunlight; in fact comet comes from the Greek kometes which means star (head), with long hair and the hair should be a kind of "dirty snowball" that would be a core of ice formed by frozen water, methane, ammonia and cyanogen gas mixed with mineral matter that sublimate when the celestial body is closer to the Sun and the gas in this way also drag of the dust particles that reflect the sunlight. Is thought that the comets can be captured by the planet Jupiter and the motion becomes from parabolic to elliptical, the tail is form from ionized material of the crown pushed away from the electromagnetic and corpuscular radiation of the Sun.
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Date: 05/03/2013
 article n°: 2150
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