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Ernst Öpik, Estonian astronomer and astrophysicist (born 1893)

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Ernst Öpik
Estonian astronomer and astrophysicist (1893–1985)
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…Source: Wikipedia (CC BY-SA)