# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/pierre-janssen
# Generated: 2026-08-13T09:55:35.435Z

schema: https://schema.org/Person
url: "https://fame.am/person/pierre-janssen"
name: "Pierre Janssen"
slug: "pierre-janssen"
description: "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."
tagline: "French astronomer (1824-1907)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Jules_Janssen_3.jpg?width=1200"
gender: "male"
country:
  name: "France"
  isoCode: "FR"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1824-02-22"
deathDate: "1907-12-23"
livingStatus: "DECEASED"
scores:
  popularity:           52.25
  momentum:             0
  historical:           22.064008
  currentAttention:     0
  sourceConfidence:     65
  profileCompleteness:  75
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
platforms:
  - platform:  "IMDB"
    url:       "https://www.imdb.com/name/nm1715062/"
    handle:    "nm1715062"
sources:
  - url: "https://lb.wikipedia.org/wiki/Pierre_Jules_C%C3%A9sar_Janssen"
    title: "Pierre Jules César Janssen"
    type:  "WIKIPEDIA"
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    title: "پيير جانسن"
    type:  "WIKIPEDIA"
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    title: "بيير جانسين (مصور من فرنسا)"
    type:  "WIKIPEDIA"
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    title: "ژول ژانسن"
    type:  "WIKIPEDIA"
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    title: "Жул Жансен"
    type:  "WIKIPEDIA"
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    title: "Pierre Janssen"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Pierre_Janssen"
    title: "Pierre Janssen"
    type:  "WIKIPEDIA"
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    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Jules_Janssen"
    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%A0%CE%B9%CE%B5%CF%81_%CE%96%CF%85%CE%BB_%CE%96%CE%B1%CE%BD%CF%83%CE%AD%CE%BD"
    title: "Πιερ Ζυλ Ζανσέν"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Pierre_Janssen"
    title: "Pierre Janssen"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Pierre_Janssen"
    title: "Pierre Janssen"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/Jules_Janssen"
    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%DA%98%D9%88%D9%84_%DA%98%D8%A7%D9%86%D8%B3%D9%86"
    title: "ژول ژانسن"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Jules_Janssen"
    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Jules_Janssen"
    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://gd.wikipedia.org/wiki/Jules_Janssen"
    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%A4%D7%99%D7%99%D7%A8_%D7%96'%D7%A0%D7%A1%D7%9F"
    title: "פייר ז'נסן"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Pierre_Jules_C%C3%A9sar_Janssen"
    title: "Pierre Jules César Janssen"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Jules_Janssen"
    title: "Jules Janssen"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%94%E3%82%A8%E3%83%BC%E3%83%AB%E3%83%BB%E3%82%B8%E3%83%A3%E3%83%B3%E3%82%B5%E3%83%B3"
    title: "ピエール・ジャンサン"
    type:  "WIKIPEDIA"
  - url: "https://jv.wikipedia.org/wiki/Pierre_Jules_C%C3%A9sar_Janssen"
    title: "Pierre Jules César Janssen"
    type:  "WIKIPEDIA"
  - url: "https://ka.wikipedia.org/wiki/%E1%83%9E%E1%83%98%E1%83%94%E1%83%A0_%E1%83%9F%E1%83%90%E1%83%9C%E1%83%A1%E1%83%94%E1%83%9C%E1%83%98"
    title: "პიერ ჟანსენი"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%ED%94%BC%EC%97%90%EB%A5%B4_%EC%9E%A5%EC%84%BC"
    title: "피에르 장센"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q298581"
    title: "Wikidata"
    type:  "WIKIDATA"
  - url: "https://www.themoviedb.org/person/6152203"
    title: "Pierre Janssen"
    type:  "DATABASE"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump