Dr. Charlotte Moore Sitterly (1898-1990). Prominent authority on astronomy and author of more than one hundred books and articles, Sitterly was a career physicist with the Bureau of Standards, U.S. Department of Commerce. She received the American Astronomical Society award in 1937 and was the first woman elected to the Royal Astronomical Society of Great Britain, 1949. Born here in Ercildoun, Dr. Sitterly was a lifelong Quaker and attended Fallowfield Friends Meeting nearby.

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