
author
1859–1948
A Belgian-born French writer who helped shape early science fiction, he moved between speculative ideas, adventure, and popular storytelling. After first publishing with his brother under the shared Rosny name, he went on to build a separate career as J.-H. Rosny jeune.

by aîné J.-H. Rosny, jeune J.-H. Rosny
Born Séraphin Justin François Boex in Brussels in 1859, he became known to readers as J.-H. Rosny jeune. He and his older brother first wrote together under the shared pen name J.-H. Rosny, and that partnership is often linked with the early development of modern science fiction in French.
After the brothers ended their literary collaboration, he continued publishing under the name J.-H. Rosny jeune. His work ranged across novels and stories, and he remained active well into the 20th century, writing in a style that connected imaginative fiction with a broader reading public.
He died in 1948. Though he is less famous today than his brother, he remains an interesting figure from the formative years of speculative fiction and French popular literature.