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| | Pope Callixtus III - Biocrawler |
 | | Callixtus III, né Alphonso de Borgia (December 31, 1378 - August 6, 1458) was born in Xàtiva, Valencia, Spain and was pope from April 8, 1455 to August 6, 1458. |
 | | According to one story, first appearing in a posthumous biography in 1475 and later embellished and popularized by Pierre-Simon Laplace, Callixtus excommunicated the 1456 apparition of Halley's Comet, believing it to be an ill omen for the Christian defenders of Belgrade, who were at that time being besieged by the armies of the Ottoman Empire. |
 | | Callixtus' papal bull of June 29, 1456, which called for public prayer for the success of the crusade, makes no mention of the comet, and by August 6, when the Turkish siege was broken, the comet had not been visible for several weeks. |
| www.biocrawler.com /encyclopedia/Callixtus_III (318 words) |
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