Milutin Milankovitch, father of the astronomical theory of paleoclimates The astronomical theory of paleoclimates explains the recurrence of glacial and interglacial cycles during the Quaternary era. Born at the beginning of the 19th century, the theory has been further developed by Milutin Milankovitch, who, by a complete mathematical approach, during the first half of the 20th century, has provided physical basis necessary to confront it with a reliable and relevant collection of geological data during the seventies. Yugoslavian engineer and astronomer, he was born at Dalj in 1879 and died in Beograd in 1958. He developed his theory between 1915 and 1938. After having been heavily criticized until the sixties, this theory has now won general acceptance.