
Family tree of Audouin DOLLFUS
Astronomer, Geographer
Born Audouin Charles DOLLFUS
French astronomer and aeronaut
Born on November 12, 1924 in Paris , France
Died on October 01, 2010 in Versailles, Yvelines , France
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Before the Viking spacecraft landed on Mars, the composition of the Martian surface was the subject of many debates. Dollfus tried to determine the composition of the Martian desert, through comparison with the appearance in polarized light of several hundred terrestrial minerals. He found that only pulverized limonite (Fe2O3) corresponded with the appearance of Mars, and concluded that the Martian surface could be composed of iron oxide. However, another astronomer, Gerald Kuiper of the University of Chicago, disagreed with this conclusion, believing that fine-grained igneous rocks were a better fit to the data, but subsequent observations proved Dollfus correct.
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Geographical origins
The map below shows the places where the ancestors of the famous person lived.