Extraterrestrial refers to any object or being beyond (extra-) the planet Earth (terrestrial). It is derived from the Latin words extra ("outside", "outwards") and terrestris ("earthly", "of or relating to the Earth"). It may be abbreviated as "E.T." Extraterrestrial may also refer to: General topics Extraterrestrial life, life that occurs outside of Earth and that probably did not originate from Earth Extraterrestrial intelligence, hypothetical intelligent extraterrestrial life Extraterrestrials in fiction List of alleged extraterrestrial beingsMedia and entertainment Extraterrestrial (TV documentary), a program on the National Geographic Channel "Extraterrestrial" (song), a 2018 song by Tynan and Kompany "E.T." (song), a 2010 song by Katy Perry Extraterrestrial: The First Sign of Intelligent Life Beyond Earth – 2021 popular science book by Avi LoebFilm Extraterrestrial (2011 film), a 2011...