UFO Over Years ?

UFO conspiracy theories are a subset of conspiracy theories which argue that various governments and politicians globally, in particular the United States Government, are suppressing evidence that unidentified flying objects are controlled by a non-human intelligence or built using alien technology. Such conspiracy theories usually argue that Earth governments are in communication or cooperation with extraterrestrial visitors despite public disclaimers, and further that some of these theories claim that the governments are explicitly allowing alien abduction.