cosmologist

Noun
  1. An astronomer who studies the evolution and space-time relations of the universe (synset 109839072)
    is a type of: astronomer, stargazer, uranologist - a physicist who studies astronomy
    specific instances: edouard lemaitre, georges henri lemaitre, lemaitre - Belgian cosmologist who proposed the big-bang theory of the origin of the universe (1894-1966)

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