Larry Niven

Trn u božjem oku znanstvenofantastična je knjiga čiji su autori Larry Niven i Jerry Pournelle. Knjiga je nastala 1975. godine. Radnja iz knjige se događaja 3017. i 3018. godine nove ere u doba obnove ljudskog Carstva.

World of Ptavvs is a science fiction novel by Larry Niven, first published in 1966 and set in his Known Space universe. It was Niven's first published novel and is based on a 1965 short story of the same name.