The document discusses several famous historical UFO sightings from the 15th century to the present day. These include a painting from the 15th century depicting a strange object in the sky, sightings over Los Angeles in 1942 and Washington D.C. in the 1950s, and the famous Roswell incident in 1947 involving a suspected crashed alien spacecraft. While many believe these to be proof of extraterrestrial visitation, the author argues that they are likely misidentifications of natural phenomena or human technology and that UFOs exist only in science fiction.

1. UFO’s By Sam K.