ASTRONOMER

Pierre Janssen

1824 - 1907

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Pierre Jules César Janssen (22 February 1824 – 23 December 1907), usually known as Jules Janssen, was a French astronomer who, along with English scientist Joseph Norman Lockyer, is credited with discovering the gaseous nature of the solar chromosphere, and with some justification the element helium. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Pierre Janssen is the 76th most popular astronomer (down from 53rd in 2019), the 871st most popular biography from France (down from 852nd in 2019) and the 6th most popular French Astronomer.

Pierre Janssen is most famous for discovering the element helium.

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Among ASTRONOMERS

Among astronomers, Pierre Janssen ranks 76 out of 644. Before him are Annibale de Gasparis, Simon Marius, Vera Rubin, Albert Marth, Friedrich Wilhelm Argelander, and Pierre Méchain. After him are Russell Alan Hulse, Wilhelm Tempel, Ejnar Hertzsprung, Antony Hewish, Henrietta Swan Leavitt, and John Russell Hind.

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Contemporaries

Among people born in 1824, Pierre Janssen ranks 13. Before him are Jean-Léon Gérôme, Maria Alexandrovna, Eugène Boudin, Pierre Puvis de Chavannes, Paul Broca, and Dayananda Saraswati. After him are Carl Reinecke, Wilkie Collins, Marie Duplessis, William Huggins, Karl-Maria Kertbeny, and Nana Sahib. Among people deceased in 1907, Pierre Janssen ranks 15. Before him are Asaph Hall, Joris-Karl Huysmans, Hector Malot, Alfred Jarry, Kato Svanidze, and Marcellin Berthelot. After him are Jean Casimir-Perier, Robert I, Duke of Parma, Joseph Joachim, Paula Modersohn-Becker, Mozaffar ad-Din Shah Qajar, and Ilia Chavchavadze.

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Others Deceased in 1907

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In France

Among people born in France, Pierre Janssen ranks 871 out of 6,770. Before him are Joseph Pitton de Tournefort (1656), Maurice René Fréchet (1878), Antoine Meillet (1866), Marie François Sadi Carnot (1837), Dora Maar (1907), and Louis I, Duke of Bourbon (1279). After him are Jean Victor Marie Moreau (1763), Joscelin I, Count of Edessa (1072), Charles Hermite (1822), Renée of France (1510), Robert of Molesme (1024), and Edmond Rostand (1868).

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Among ASTRONOMERS In France

Among astronomers born in France, Pierre Janssen ranks 6. Before him are Nicolas-Louis de Lacaille (1713), Charles Messier (1730), Jérôme Lalande (1732), Édouard Stephan (1837), and Pierre Méchain (1744). After him are Jacques Cassini (1677), Nicolas-Claude Fabri de Peiresc (1580), Jean Chacornac (1823), Auguste Charlois (1864), Bernard Lyot (1897), and Joseph-Nicolas Delisle (1688).

French born Astronomers

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