Bailly, Jean-Sylvain

born Sept. 15, 1736, Paris, France
died Nov. 12, 1793, Paris

French astronomer and politician.

Noted for his computation of an orbit for Halley's Comet in 1759, he turned to politics with the outbreak of the French Revolution. He was chosen president of the Third Estate in May 1789 and was proclaimed the first mayor of Paris in July. He later lost popularity, particularly after his order to disperse a riotous crowd led to the massacre of the Champ de Mars (1791). He retired but was subsequently arrested, taken before the revolutionary tribunal, and guillotined.

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▪ French astronomer

born Sept. 15, 1736, Paris
died Nov. 12, 1793, Paris
 French astronomer noted for his computation of an orbit for Halley's Comet (1759) and for his studies of the four satellites of Jupiter then known. He was also a statesman who took part in the revolutionary events of his age.

      Bailly began his study of Halley's Comet in 1759. One year later he established an observatory where he could undertake observations of Jupiter's satellites. He was elected to the Académie des Sciences in 1763. His major works include Essai sur la théorie des satellites de Jupiter (1766; “Essay on the Theory of Jupiter's Satellites”) and Mémoires sur les inégalités de la lumière des satellites de Jupiter (1771; “Memoirs on the Uneven Illumination of Jupiter's Satellites”).

      The French Revolution interrupted his studies. Elected deputy from Paris to the States General, he was chosen president of the third estate on May 5, 1789, and led the famous proceedings in the Tennis Court on June 20. He was proclaimed the first mayor of Paris on July 15, 1789. He was reelected mayor in August 1790 but lost popularity, particularly after his order to the national guard to disperse a riotous crowd led to the massacre of the Champ de Mars on July 17, 1791. Bailly retired on Nov. 16, 1791, and went to Nantes in July 1792, where he composed Mémoires d'un témoin de la Révolution (“Memoirs of a Witness of the Revolution”), an incomplete narrative of the extraordinary events of his public life. Late in 1793 Bailly went to Melun to join his friend Pierre-Simon Laplace, but was recognized, arrested, and taken before the revolutionary tribunal at Paris on November 10. He was subsequently guillotined.

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Universalium. 2010.

Look at other dictionaries:

  • Bailly, Jean-Sylvain — (1736 1793)    astronomer, historian, revolutionary    Born in paris, Jean Sylvain Bailly was early recognized as a brilliant astronomer and mathematician. At age 26, he was nominated to the Academy of Sciences, with his main work as an… …   France. A reference guide from Renaissance to the Present

  • Bailly, Jean-Sylvain — (15 sep. 1736, París, Francia–12 nov. 1793, París). Astrónomo y político francés. Célebre por su cálculo de la órbita del cometa Halley en 1759, al estallar la Revolución francesa se dedicó a la política. Fue nombrado presidente del tercer estado …   Enciclopedia Universal

  • BAILLY, JEAN SYLVAIN —    an astronomer, born at Paris; wrote the History of Astronomy, Ancient and Modern, in five volumes; was distracted from further study of the science by the occurrence of the Revolution; elected president of the National Assembly; installed… …   The Nuttall Encyclopaedia

  • Bailly, Jean Sylvain — ► (1736 93) Político y científico francés. Fue presidente de la Asamblea Nacional en 1789 …   Enciclopedia Universal

  • Jean Sylvain Bailly — Jean Sylvain Bailly. Jean Sylvain Bailly (15 de septiembre de 1736, París – 12 de noviembre de 1793, París), político y académico francés. Contenido …   Wikipedia Español

  • Jean-Sylvain Bailly — Jean Sylvain Bailly, né le 15 septembre 1736 à Paris et mort guillotiné le 12 novembre 1793 à Paris, est un mathématicien, astronome …   Wikipédia en Français

  • Jean Sylvain Bailly — (* 15. September 1736 in Paris; † (hingerichtet) 12. November 1793 Paris) war französischer Astronom und erster Bürgermeister von Paris. Bailly wurde durch die Berechnung der Umlaufbahn des Halleyschen Kometen im Jahre 1759 bekannt. Ferner stud …   Deutsch Wikipedia

  • Jean-Sylvain Bailly — (* 15. September 1736 in Paris; † 12. November 1793 ebenda) war französischer Astronom und erster Bürgermeister von Paris. Bailly wurde durch die Berechnung der Umlaufbahn des Halleyschen Kometen im Jahre 1759 bekann …   Deutsch Wikipedia

  • Jean Sylvain Bailly — Pour les articles homonymes, voir Bailly. Jean Sylvain Bailly …   Wikipédia en Français

  • Jean Sylvain Bailly — Infobox Scientist name = Jean Sylvain Bailly box width = image width =150px caption =Jean Sylvain Bailly (from: Dr. Nuno Carvalho de Sousa Private Collections Lisbon.) birth date = September 15, 1736 birth place = Paris death date = November 12,… …   Wikipedia

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