Tidal Moon, and Pygmalion's Spectacles

Set on Ganymede, "Tidal Moon" is a unique science fiction short story co-written by Stanley G. Weinbaum and his sister Helen Weinbaum. Initially started by Stanley before his untimely death, the narrative was completed by Helen, making it a rare collaborative effort. First published in 1938, it showcases the imaginative world-building typical of Weinbaum's work, while also highlighting the contributions of his sister in bringing the story to completion.