On April 11, 1901, theoretical astronomer and astrophysicist Donald Howard Menzel was born. Menzel discovered the physical properties of the solar chromosphere, the chemistry of stars, the atmosphere of Mars, and the nature of gaseous nebulae. Moreover, he was best known for his arguments against the existence of extraterrestrial UFO‘s. Early Years Donald Howard Menzel already collected rocks as a child and built a chemistry laboratory in the cellar of his family’s…Read more
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