Space Invaders, Around the World in 80 Faiths, ARP 2500, Arra, Arrival II, Art Bell's Dark Matter, Art film, Arthur C.
, Alien autopsy, Alien Autopsy (film), Alien from the Darkness, Alien Incident, Alien invasion, Alien language, Alien Lockdown, Alien Olympics 2044 AD, Alien Origin, Alien Radio, Alien Secrets, Alien Swarm, Alien visitation, Alienation (video game), Aliens (Dark Horse Comics line), Aliens in the Attic, Aliens of the Deep, Alive in Joburg, All Alone (film), All You Need Is Kill, Allan Hills 84001, Alliance (DC Comics), Alpha Centauri, Alpha Centauri (Doctor Who), Alpha Centurion, Alternate Presidents, Alternative 3, Alternative versions of Supergirl, Alyoshenka, Amazing Engine, American Astronomical Society 215th meeting, American Dad!, American Horror Story: Asylum, Anasazi (The X-Files), Ancient astronauts, And Having Writ., Andorian, Andreas Anton, Ang Panday (1980 film), Anne Heche, Antônio Vilas Boas, Anthony Grey, Anthropocentrism, Anton Maria Schyrleus of Rheita, Anunnaki, Apocalypticism, Apollo 18 (film), Appellaxian, April 1965, Aquila (children's magazine), Arachnid (film), Archaea, Archean life in the Barberton Greenstone Belt, Arcticfox, Area 51, Area 51 (2005 video game), Area 51 (film), Area 51: Site 4, Arecibo Observatory, Ares (video game), Ark (novel), Arkanoid vs.
Artificial Intelligence, ABC Movie of the Week, Abdullajon, Achron, Active SETI, Ad Astra (film), Adam Warlock, Ademar José Gevaerd, Adolf Hitler in popular culture, Adventure film, Adversary (comics), Advertising column, Aerospace International Research Center, Aestivation hypothesis, Afterlife (The Outer Limits), Agent 51, Agentss, Aggressor Six, Agora (film), Air Diver, Airgamboys, Al-Isra, Alamo, Nevada, Alan Godfrey, Alan Hale (astronomer), Albert Harrison (psychologist), Alcatraz Island in popular culture, Alejandro Agostinelli, ALF (TV series), Alien, Alien (creature in Alien franchise), Alien (franchise), Alien abduction, Alien Abduction (2005 film), Alien Abduction: Incident in Lake County, Alien Adventure. ġ952 relations: A Boy and His Blob: Trouble on Blobolonia, A Deepness in the Sky, A Fire Upon the Deep, A History Channel Thanksgiving, A Lord from Planet Earth, A Maggot, A Message from Earth, A Question and Answer Guide to Astronomy, A Small Talent for War, A Talent for War, A Trip to the Moon, A Very Merry Unauthorized Children's Scientology Pageant, A. Extraterrestrial life,Where "extraterrestrial" is derived from the Latin extra ("beyond", "not of") and terrestris ("of Earth", "belonging to Earth").