Extraterrestrial

+**Extraterrestrial** refers to anything originating or existing beyond Earth. It commonly describes hypothetical [Life](/wiki/life) forms that may inhabit other planets or moons, a concept explored across [Astrobiology](/wiki/astrobiology) and popularized in [Science Fiction](/wiki/science_fiction).

+## See also

+- [UFO](/wiki/ufo)

+- [Alien](/wiki/alien)

+- [Universe](/wiki/universe)