The Last Spaceship is a science fiction novel by Murray Leinster. The plot revolves around a group of astronauts who embark on a journey to explore the galaxy and discover new worlds. The mission is put in jeopardy when the ship's propulsion system fails, and the crew is forced to face numerous challenges and obstacles as they try to find a way back home. Along the way, they encounter strange creatures, visit exotic planets, and encounter a mysterious alien race with its own agenda. The novel is a thrilling adventure through the final frontier and is full of action, excitement, and wonder.