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Comets: Difference between revisions
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[[File:Star of the Hero 1936.jpg|thumb|upright=1.4|left|''Star of the Hero'', Nicholas Roerich (1936)]] | <languages /> | ||
[[File:Star of the Hero 1936.jpg|thumb|upright=1.4|left|<translate>''Star of the Hero'', Nicholas Roerich (1936)</translate>]] | |||
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{{Solar system}} | {{Solar system}} | ||
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=== Halley’s Comet === | === Halley’s Comet === | ||
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[[File:Lspn comet halley.jpg|thumb|upright|<translate>Halley’s Comet</translate>]] | |||
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English astronomer and mathematician Edmund Halley (1656–1742) was the first to calculate the orbit of the great comet of 1682—since known as Halley’s comet. Identifying it as the same comet which had appeared in 1531 and again in 1607, he correctly predicted its return in 1758. The comet, which follows a highly elliptical path around the sun over a 76-year period of revolution, appeared in 1910 and again in 1986. | English astronomer and mathematician Edmund Halley (1656–1742) was the first to calculate the orbit of the great comet of 1682—since known as Halley’s comet. Identifying it as the same comet which had appeared in 1531 and again in 1607, he correctly predicted its return in 1758. The comet, which follows a highly elliptical path around the sun over a 76-year period of revolution, appeared in 1910 and again in 1986. | ||
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=== Comet Hale-Bopp === | === Comet Hale-Bopp === | ||
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[[File:Comet Hale-Bopp 1995O1.jpg|thumb|<translate>Comet Hale-Bopp</translate>]] | |||
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Comet Hale-Bopp was first observed in 1995 and reached its perihelion on April 1, 1997. It was one of the brightest comets in many decades and was visible to the naked eye for a record eighteen months, twice long as the previous record holder, the Great Comet of 1811.<ref>The Great Comet of 1811 was popularly thought to have portended Napoleon’s invasion of Russia and the War of 1812, among other events.</ref> | Comet Hale-Bopp was first observed in 1995 and reached its perihelion on April 1, 1997. It was one of the brightest comets in many decades and was visible to the naked eye for a record eighteen months, twice long as the previous record holder, the Great Comet of 1811.<ref>The Great Comet of 1811 was popularly thought to have portended Napoleon’s invasion of Russia and the War of 1812, among other events.</ref> | ||
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{{POWref|40|40|, October 5, 1997}} | {{POWref|40|40|, October 5, 1997}} | ||
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<references /> | <references /> | ||