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On this day in 1877 – May 31st – French astronomer Gabrielle Renaudot Flammarion was born in Meudon in the département of Hauts-de-Seine.

Gabrielle, the second wife of the prominent astronomer Camille Flammarion, was General Secretary of the Société Astronomique de France. She worked with her husband at his observatory at Juvisy-sur-Orge, France from where she carried out observations of the planets, minor planets and variable stars. Gabrielle Flammarion published work on several topics including the Great Red Spot on Jupiter and the surface features of Mars.