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Extraterrestrial (from the Latin extra 'outside' and terra 'earth') referred to - as a demarcation to terrestrial - extraterrestrial . The whole universe with the exception of the earth and its atmosphere is therefore extraterrestrial.


In astronomy, celestial bodies are referred to as extraterrestrial if they are located outside the planet earth including its atmosphere or have their origin there. This also applies to other terrestrial (Earth-like) planets and individual features such as extraterrestrial oceans . The Extraterrestrial Physics deals with physical phenomena outside the earth and is closely related to astrophysics . Extraterrestrial solar radiation has an area power density of the size of the solar constant at a solar distance which corresponds to the mean solar distance of the earth , without the interaction with the earth's atmosphere. Astronomical objects that do not originate in the solar system are also known as extrasolar . So planets orbiting a central star other than the sun are called extrasolar planets .

It is also used extraterrestrially in connection with possibly existing extraterrestrial life that plays a role in exobiology and in science fiction literature and films. One of the most famous examples of this use is in the movie ET - The Extra Terrestrial , which contains the abbreviation of the word.

See also

Wiktionary: extraterrestrial  - explanations of meanings, word origins, synonyms, translations
Wiktionary: extraterrestrial  - explanations of meanings, word origins, synonyms, translations

Individual evidence

  1. Max Planck Institute for Extraterrestrial Physics
  2. ^ Technical University of Dresden: Extraterrestrial radiation
  3. Climate atlas BW:> Global radiation> Basics ( Memento from December 22, 2015 in the Internet Archive )