The "Mars Trilogy" is a series of three science fiction novels written by Kim Stanley Robinson. The books—Red Mars, Green Mars, and Blue Mars—explore the colonization and terraforming of Mars over several generations. They delve into the political, social, and environmental challenges faced by the settlers as they attempt to transform the planet into a more Earth-like environment. The trilogy is known for its detailed scientific approach and realistic portrayal of the complexities involved in altering a planet's ecosystem. It also examines themes of sustainability, human nature, and the ethical implications of colonization, making it a significant work in contemporary science fiction literature.