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Noun Named Entity
Categories: Spectroscopists, Foreign associates of the National Academy of Sciences, 19th-century French astronomers, Burials at Père Lachaise Cemetery, Honorary Fellows of the Royal Society of Edinburgh
EN
Pierre Janssen  Jules Janssen  Pierre Jules César Janssen  G. Janssen  Jules Janseen
EN
Pierre Jules César Janssen, 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. Wikipedia
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EN
Pierre Jules César Janssen, 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. Wikipedia
French astronomer Wikidata