Abbé Louis Théophile Moreux (1867-1954), a French priest, astronomer, and meteorologist born in Argent-sur-Sauldre (Cher), was a leading popularizer of science in the first half of the twentieth century. Ordained in 1891, he founded a private observatory in Bourges in 1907 (rue Ranchot), from which he observed the Moon, the planets, and sunspots. An active member of the Société astronomique de France from 1893 and a close associate of Camille Flammarion, he published extensively, notably in Doin's "Pour comprendre" series and in general works such as Le Ciel et l'Univers (1927). Made a Knight of the Legion of Honour in 1921, he has a Martian crater named after him. He prefaced several works by friends, including Henry de Graffigny's Irons-nous dans la Lune?.