One of the first visitors of the Haute-Provence Observatory was born on which year?
Margaret Burbidge Eleanor Margaret Burbidge ("née" Peachey), FRS (born August 12, 1919 in Davenport) is a British-born American astrophysicist, noted for original research and holding many administrative posts, including Director of the Royal Greenwich Observatory.
Benjamin Baillaud Édouard Benjamin Baillaud (14 February 1848 – 8 July 1934) (aged 86) was a French astronomer.