Ernst Öpik

Ernst Öpik
Ernst Öpik
Born(1893-10-22)22 October 1893
Kunda, Kreis Wierland, governorate of Estonia Russian Empire (current Estonia)
Died10 September 1985(1985-09-10) (aged 91)
Bangor, Northern Ireland, United Kingdom
Alma mater
Known forÖpik–Oort cloud
Awards
Scientific career
FieldsAstronomy
InstitutionsArmagh Observatory

Ernst Julius Öpik (22 October [O.S. 10 October] 1893 – 10 September 1985) 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.

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