Flying saucers are often described as disc-shaped objects that some people believe are spacecraft from other planets. They gained popularity in the 1940s and 1950s, particularly after reports of sightings in the United States. Many of these sightings have been attributed to misidentified aircraft, weather phenomena, or hoaxes. Despite the lack of scientific evidence supporting the existence of flying saucers, they remain a significant part of popular culture. Movies, books, and television shows frequently feature these mysterious objects, contributing to ongoing public fascination with extraterrestrial life and UFOs.