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

outline is provided as an overview of and topical guide to extraterrestrial life: Extraterrestrial life – is any type of lifeform, from prokaryotes to intelligent...

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

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

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

locate intelligent life as opposed to analyzing the implications of contact with that life. The potential changes from extraterrestrial contact could vary...

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

ISBN 0-521-56564-2, OCLC 28928183 Crowe, Michael J. (1999), The Extraterrestrial Life Debate, 1750–1900, Courier Dover Publications, pp. 241–246, ISBN 0-486-40675-X...

the first evidence of extraterrestrial life on Mars. When members of the crew conduct their research, the rapidly evolving life-form proves to be far...

The existence of extraterrestrial life is a scientific idea that has been debated for centuries. Initially, the question was purely speculative; in modern...

more complex structure. Life is only known to exist on Earth but extraterrestrial life is thought probable. Artificial life is being simulated and explored...

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

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

including psychology, information theory, the origin of life, and the possibility of extraterrestrial life. In 1863 Rudolf Clausius published his noted memoir...

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...

evidence of advanced extraterrestrial life and the apparently high likelihood of its existence. As a 2015 article put it, "If life is so easy, someone...

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...

Sonic the Hedgehog 3 is an upcoming action adventure comedy film based on the video game series published by Sega, and the sequel to Sonic the Hedgehog...

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

Interstellar: The Search for Extraterrestrial Life and Our Future in the Stars (also known as Interstellar) is a popular science book written by American...

extinct. Earth is the only celestial body known to harbor life forms. No form of extraterrestrial life has yet been discovered. Archaea – a domain of single-celled...

planetary biosignatures of past or present extraterrestrial life, and the study of the origin and early evolution of life on Earth. The field of astrobiology...

the fifth kind' as human initiated contact and communication with extraterrestrial life. CSETI claims to have over 3,000 confirmed reports of UFO sightings...

The Marvels is a 2023 American superhero film based on Marvel Comics. Produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures...

scale, there is a barrier to development that makes detectable extraterrestrial life exceedingly rare. The Great Filter is one possible resolution of...

Science of Extraterrestrial Life (published in the US, and UK second edition as What Does a Martian Look Like?: The Science of Extraterrestrial Life) is a...

Alien: Romulus is a 2024 American science fiction horror film directed and co-written by Fede Álvarez. Produced by Scott Free Productions and Brandywine...

Avatar: Fire and Ash is an upcoming American epic science fiction film co-produced, co-edited, co-written, and directed by James Cameron. Distributed by...

sulfuric acid-rich extraterrestrial environments. Alternatively, the weak bonds in silicon compounds may help maintain a rapid pace of life at cryogenic temperatures...

of extraterrestrial life, and how humans should treat extraterrestrial non-intelligent life (like microbes) and extraterrestrial intelligent life (and...