Frequency — courtesy of comets

November 27, 2011 4:42

Not too many objects in the sky visible to the naked eye. But one of the most famous comet that bears the name of the Englishman Edmund Halley, can be observed without any additional equipment. Halley's comet belongs to the short-period comets — she returns to the Sun once every 76 years. She last appeared in the March-April 1986, when she flew to the Earth at a distance of about 63 million km (it was recorded April 10, other days the distance was even more).

Following visits tailed pilgrims, according to calculations of

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