The term "Third Kind" often refers to the classification of extraterrestrial encounters, specifically in the context of UFO phenomena. It was popularized by the U.S. government in the 1970s, categorizing encounters into different types based on the level of interaction. A "Third Kind" encounter involves sightings of UFOs and direct contact with extraterrestrial beings. The concept gained further prominence through the film "Close Encounters of the Third Kind," directed by Steven Spielberg. Released in 1977, the movie explores themes of communication and connection between humans and aliens, showcasing how these encounters can profoundly impact individuals and society.