Which Happened First?

Ernst Öpik

Ernst Öpik
Image: Wkentaur · CC BY-SA 3.0 · source

Ernst Julius Öpik was an Estonian astronomer and astrophysicist who spent the second half of his career (1948–1981) at the Armagh Observatory in Northern Ireland. He is best known for his pioneering work on solar system dynamics, particularly of the Oort cloud and the Yarkovsky effect.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

Timeline

  1. Albert Szent-GyörgyiSeptember 16, 1893 – October 22, 1986
  2. Christopher Kelk IngoldOctober 28, 1893 – December 8, 1970
  3. Edward Adelbert DoisyNovember 13, 1893 – October 23, 1986
  4. Ernst Öpik (this page)October 22, 1893 – September 10, 1985
  5. Harold UreyApril 29, 1893 – January 5, 1981
  6. Hilda GeiringerSeptember 28, 1893 – March 22, 1973

Related

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