Ribbon in the Sky is a science fiction short story written by Murray Leinster, an American author known for his significant contributions to the science fiction genre during the 20th century. "Ribbon in the Sky" likely presents a speculative or futuristic scenario involving space exploration and the discovery of a mysterious celestial phenomenon—a ''ribbon'' or anomaly in the sky. The narrative might revolve around a team of astronauts, scientists, or explorers who embark on a space mission to investigate this enigmatic ribbon and uncover its secrets.