Donald Howard Menzel

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Science and technology

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What Wikipedia says

Donald Howard Menzel (April 11, 1901 – December 14, 1976) was one of the first theoretical astronomers and astrophysicists in the United States. He discovered the physical properties of the solar chromosphere, the chemistry of stars, the atmosphere of Mars, and the nature of gaseous nebulae.

Excerpt from the Wikipedia article “Donald Howard Menzel”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: The original uploader was Fdavis99 at English Wikipedia., CC BY-SA 3.0, via Wikimedia Commons.