Alien Intelligence
Extraterrestrial life (from the Latin words: extra and terrestris ) is defined as life that does not originate from Earth. It is often also referred to as alien life, or simply aliens (or space aliens, to differentiate from other definitions of alien or aliens). These hypothetical forms of life range from simple bacteria-like organisms to beings far more complex than humans.
The development and testing of hypotheses on extraterrestrial life is known as exobiology or astrobiology; the term astrobiology, however, includes the study of life on Earth viewed in its astronomical context. Many scientists consider extraterrestrial life to be plausible, but there is no conclusive evidence for its existence. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial life, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction.
Read more about Alien Intelligence: Background, Possible Basis, Planetary Habitability in The Solar System, Scientific Search, The Drake Equation
Famous quotes containing the words alien and/or intelligence:
“The Jew is neither a newcomer nor an alien in this country or on this continent; his Americanism is as original and ancient as that of any race or people with the exception of the American Indian and other aborigines. He came in the caravels of Columbus, and he knocked at the gates of New Amsterdam only thirty-five years after the Pilgrim Fathers stepped ashore on Plymouth Rock.”
—Oscar Solomon Straus (1850–1926)
“Since an intelligence common to us all makes things known to us and formulates them in our minds, honorable actions are ascribed by us to virtue, and dishonorable actions to vice; and only a madman would conclude that these judgments are matters of opinion, and not fixed by nature.”
—Marcus Tullius Cicero (106–43 B.C.)