Lost in space is one of the most powerful tropes in science fiction, placing characters in vast, isolated environments where survival is uncertain and connection to Earth is lost. These stories explore not only physical endurance, but the psychological impact of distance, silence, and the unknown, as seen in texts like Kaleidoscope and The Martian. This collection of 70 Lost in Space Writing Prompts offers a complete creative toolkit, including plot hooks, titles, opening lines, and more. Designed for both classroom use and independent writing, these prompts explore themes of isolation, survival, and human resilience, helping writers create stories shaped by uncertainty and the vastness of space.