[1] She wrote one of the earliest known works of science fiction, Voyage de Milord Céton dans les sept planètes ("Lord Seton's Voyage Among the Seven Planets", 1765).
[2][3] Marie-Anne Roumier was from a family related to Bernard Le Bovier de Fontenelle and received a good education.
In Les Ondins, a moral tale and Amazon utopia published in 1768, she defended the idea of a woman being able to choose the man she was to marry.
[4] Her novel Nicole de Beauveais went further, suggesting the possibility of an autonomous life for women outside marriage.
Voyage de Milord Céton dans les sept planètes published in 1765 is also considered to be one of the first known feminist science fiction novels.