Ringworld (1970), the most celebrated work in Niven's "Known Space" sequence, posited a vast body of matter - enough for an entire solar system - spinning around a sun in the form of a single giant artifact of unknown origin: a continuous million-mile-wide ribbon provided with oceans, atmosphere, and vast flat projections (life-size "maps") of Earth and other inhabited planets. The present book takes up the puzzle some 20 years after Louis Wu's escape from the Ringworld. Kidnapped by the mate of Nessus, their two-headed alien companion of the previous voyage, Louis and his catlike ally Chmeee are transported to the Ringworld - now spinning dangerously off-center - in an attempt to discover the cause of the aberrant rotation before the world grazes its sun. Searching for clues to the design of the structure's long-vanished original engineers, they encounter various hominid and other races before finding the barely feasible, wholly appalling solution hidden beneath the "Map of Mars."

Udgivet af Ballantine 1905

Larry Niven
Amerikansk forfatter som har skrevet SF siden 1964. Niven har gennem mange år været en af de mest roste og bestsælgende personer I branchen og er specielt kendt for sit store "Known Space" univers. Der er mange gode romaner og noveller som foregår I "Known Space" men de mest berømte er utvivlsomt "Ringworld" bøgerne. Den første bog om Louis Wu var så god at den vandt både Nebula og Hugo priserne. Men Niven har også andre gode bøger på samvittigheden, såsom "Dream Park" bøgerne som han skrev med Steven Barnes, og "Footfall" og "The Mote in God's Eye" skrevet med Jerry Pournelle.