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  The most famous sighting of Halley's Comet was in 1066 right before the battle of Hasting. Also possibly sighted in 66 AD and 837 Ad.
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  In 1705, Edmund Halley predicted that the comet would return in 1758 (53 years into the future).
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  Halley's Comet was named after a British astronomer, named Edmund Halley. Halley's Comet is one of the most famous comets in astronomy.
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  This was one of the first times Halley's Comet was actually visible to the eye. Also this was the first time it was photographed.
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  In 1986, Halley's Comet was visible once again.
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  It was the closest to the Earth as its ever been.
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  The next appearence (in our time) will be in 2062. We do not know exactly what month and day.