Ringworld
Pierson's puppeteers, strange, three-legged, two-headed aliens, have discovered an immense structure in a hitherto unexplored part of the universe. Frightened of meeting the builders of such a structure, the puppeteers set about assembling a team consisting of two humans, a puppeteer and a kzin, an alien not unlike an eight-foot-tall, red-furred cat, to explore it.
The artefact is a vast circular ribbon of matter, some 180 million miles across, with a sun at its centre – the Ringworld. But the expedition goes disastrously wrong when the ship crashlands and its motley crew faces a trek across thousands of miles of the Ringworld's surface.
Larry Niven
Larry Niven (Laurence van Cott Niven) is an American science fiction author. He was born 1938. His best known novel is Ringworld (1970), which received Hugo, Locus, Ditmar and Nebula awards.
Ringworld
Ringworld consists of four primary books, and includes six additional books that complement the series but are not considered mandatory reads. The current recommended reading order for the series is provided below.
Main series Tales of Known Space