This Day In History
This Day In History
Saturday, October 19, 2019

«French astronomer»

Jean-Sylvain Bailly

Jean-Sylvain Bailly
(September 15, 1736 - November 12, 1793)
Jean-Sylvain Bailly was a French astronomer and orator, one of the leaders of the early part of the French Revolution. He served as the mayor of Paris from 1789 to 1791 and was ultimately guillotined during the Reign of Terror.
French astronomer, astronomer, orator

Pierre Janssen

Pierre Janssen
(February 22, 1824 - December 23, 1907)
Pierre Jules César Janssen, usually known in French as Jules Janssen, was a French astronomer who, along with the English scientist Joseph Norman Lockyer, is credited with discovering the gas helium.
French astronomer, astronomer, helium

Jerome Lalande

Jerome Lalande
(July 11, 1732 - April 4, 1807)
Joseph Jérôme Lefrançois de Lalande was a French astronomer and writer.
French astronomer, astronomer
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