Look up extraterrestrial, extra-, terrestrial, or extra in Wiktionary, the free dictionary. Extraterrestrial may refer to: Extraterrestrial life, life...

in astronomy) Extraterrestrial life, or alien life (colloquially, alien), is life which does not originate from Earth. No extraterrestrial life has yet...

astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth. The only extraterrestrial sky that has...

Extraterrestrial intelligence (ETI) refers to hypothetical intelligent extraterrestrial life. No such life has ever been verifiably observed to exist...

The cultural impact of extraterrestrial contact is the corpus of changes to terrestrial science, technology, religion, politics, and ecosystems resulting...

An extraterrestrial or alien is a lifeform that did not originate on Earth. The word extraterrestrial means "outside Earth". Extraterrestrials are a common...

ark Generation ship Extraterrestrial surface settlement Moonbase Mars base Extraterrestrial underground settlements Extraterrestrial submerged settlements...

This is a list of lists of fictional extraterrestrial species. A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z List of Noon...

The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life, for example, monitoring...

An extraterrestrial vortex is a vortex that occurs on planets and natural satellites other than Earth that have sufficient atmospheres. Most observed extraterrestrial...

The extraterrestrial hypothesis (ETH) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by...

referred to as Zeta Reticulans, Roswell Greys or Greys, are purported extraterrestrial beings. They are frequent subjects of close encounters and alien abduction...

ufologist and a retired physician. He founded the Center for the Study of Extraterrestrial Intelligence (CSETI) and the Disclosure Project, which seeks the disclosure...

The study of extraterrestrial atmospheres is an active field of research, both as an aspect of astronomy and to gain insight into Earth's atmosphere. In...

refers to a pseudoscientific set of beliefs that hold that intelligent extraterrestrial beings (alien astronauts) visited Earth and made contact with humans...

Extraterrestrial contact may refer to: Search for extraterrestrial intelligence Potential cultural impact of extraterrestrial contact First contact (science...

A culture of extraterrestriality is the cultural imagination and description of otherworldlyness, alienness or outright outer space, characterizing the...

The communication with extraterrestrial intelligence (CETI) is a branch of the search for extraterrestrial intelligence (SETI) that focuses on composing...

This is a list of extraterrestrial beings that have been reported in close encounters, claimed or speculated to be associated with unidentified flying...

release as E.T.N.: The Extraterrestrial Nastie, E.T.N.: The Extraterrestrial Nasty, The Extraterrestrial Nastie and The Extraterrestrial Nasty . As part of...

The Extraterrestrial World Tour is the third concert tour and second world tour by Chinese singer-songwriter Joker Xue. As of August 2024, the "Extraterrestrial...

Extraterrestrial (also known under the working title of The Visitors) is a 2014 Canadian science fiction horror film that was directed by Colin Minihan—one...

Extraterrestrial Civilizations is a 1979 book by Isaac Asimov, in which the author estimates the probability of there being intelligent extraterrestrial...

Melissa Mathison. It tells the story of Elliott, a boy who befriends an extraterrestrial, dubbed E.T., who is left behind on Earth. Along with his friends and...

is a common feature in science fiction stories and films, in which extraterrestrial lifeforms invade Earth to exterminate and supplant human life, enslave...

In ufology, Nordic alien is the name given to alleged humanoid extraterrestrials, purported to come from the Pleiades (i.e., Pleiadians), who resemble...

Cosmic dust – also called extraterrestrial dust, space dust, or star dust – is dust that occurs in outer space or has fallen onto Earth. Most cosmic dust...

Alien languages, i.e. languages of extraterrestrial beings, are a hypothetical subject since none have been encountered so far. The research in these hypothetical...

the discrepancy between the lack of conclusive evidence of advanced extraterrestrial life and the apparently high likelihood of its existence. Those affirming...

probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy. The equation was formulated...