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- Dictionaryextraterrestrial/ˌɛkstrətɪˈrɛstrɪəl/
adjective
- 1. of or from outside the earth or its atmosphere: "searches for extraterrestrial intelligence"
noun
- 1. a hypothetical or fictional being from outer space.
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3 days ago · The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life, for example, monitoring electromagnetic radiation for signs of transmissions from civilizations on other planets.
3 days ago · Extrasolar planet, any planetary body that is outside the solar system and that usually orbits a star other than the Sun. Extrasolar planets were first discovered in 1992. More than 5,000 are known, and almost 9,000 await further confirmation. Learn more about extrasolar planets in this article.
3 days ago · Enrico Fermi (Los Alamos 1945) The Fermi paradox is the discrepancy between the lack of conclusive evidence of advanced extraterrestrial life and the apparently high likelihood of its existence. [1] [2] As a 2015 article put it, "If life is so easy, someone from somewhere must have come calling by now."
5 days ago · Extraterrestrial colonization is its broader form, including the use of celestial bodies, other than Earth, for interplanetary colonization. The inhabitation and territorial use of extraterrestrial space has been proposed, for example, for space settlements or extraterrestrial mining enterprises.
2 days ago · A minima, primitive life can be defined as an open chemical system, fed with matter and energy, capable of self-reproduction (i.e., making more of itself by itself), and also capable of evolving. The concept of evolution implies that chemical systems would transfer their information fairly faithfully but make some random errors.
1 day ago · For the foreseeable future, the distances are too large for that to happen, where suspected extraterrestrial civilisations are thousands, millions, or billions of light-years away. Those distances hamper hunts for signals engaged in by the Search for Extraterrestrial Intelligence (SETI) Institute, which metaphorically dips only an infinitesimally small scoop into the vast cosmic ocean.
5 days ago · Do we already have evidence of intelligent extraterrestrial life? What would it take for us to all agree there are technological civilizations beyond earth? How does the media complicate our understanding of the subject?
2 days ago · The Higgs boson (blue) may be created by the interaction of gluons (yellow) during proton collisions. Protons consist of two up quarks (red) and one down quark (purple), bound by gluons so strongly that in the sea of virtual particles (gray) more massive quarks and antiquarks, for example, beautiful quarks, may appear, the presence of which also affects on the birth process of the Higgs bosons.
5 days ago · define “Extraterrestrial Technological Instantiations”. When discussing the Drake Equation, it’s important to emphasise that N C is an expectation value. It does not represent the exact number of ETIs at any one time (Glade et al.2012), but rather the average over some time interval over which the
6 days ago · Humans as far back as the ancient Greeks have considered the possibility of extraterrestrial life. Astronomers and researchers now believe that modern technology could enable scientists to answer the question of whether aliens exist. And in searching for extraterrestrial life, scientists hope to learn more about human life, too.
