World UFO Day is celebrated to keep watch on the skies for any signs of aliens

World UFO Day is celebrated every year on July 2. The day reminds us of the possible existence of aliens in the Universe. In summer 1947, the Roswell UFO incident reminds us of world-renowned conspiracy theory about the existence of aliens. A farmer discovered unidentifiable debris in his sheep fields just outside Roswell, New Mexico. A local Air Force base claimed the debris came from a crashed hot air balloon but many people thought that they were remnants of a flying saucer. World UFO Day is celebrated to increase awareness among people to keep watch on the skies for any signs of aliens who may come to visit our world.