extraterrestrial life

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extraterrestrial life

(eks-tră-tĕ-ress -tree-ăl) See exobiology; SETI.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
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It did not originate from an alien civilization. In a paper published in the journal Nature Astronomy, 14 scientists, including Knight, wrote that they found "no compelling evidence to favour an alien explanation for 'Oumuamua," to the dismay of alien hunters everywhere.
Mystery space object probably not aliens
"Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization," according to the paper forthcoming in The Astrophysical Journal Letters.
Interstellar object Oumuamua may be 'alien probe': Harvard scientists
Learned , the researchers explain various ways an alien civilization could destroy the world, either intentionally or unintentionally, by embedding code in a message.
Researchers Believe Aliens Could Send Malware and Destroy Humanity
His work ethic is modeled on the prime directive of Star Trek: never interfere with an alien civilization. But with only five days left before Lena's comeback concert, Ray quickly runs afoul of his subject, who places him on a one-week probation.
Live from Medicine Park
A small group of scientists has unilaterally decided to send messages to any advanced alien civilization living in a star system 12.4 light years away, Newsweek reported.
Scientists sent messages to advanced alien civilizations and are hoping for a reply in 25 years
Contact with an alien civilization would affect humanity in profound ways.
No place like home?
Were some alien civilization to build such a structure as a Dyson sphere, would it really make sense to have sections many thousands of miles wide put in place while having most other sections not built at all?
Construction zone ahead
In the 1960s, for example, astronomers detected strange signals from space which some speculated could be transmissions from an alien civilization.
Astronomers Launch Search for ET in Potential 'Alien Megastructure'
The storyline picks up after the alien civilization has landed and populated Earth in remote and desolate locations.
Sample Chapters in Audio & Text for Book IV in "SETI" Series Available Now
Today, others believe that there once was a great ancient alien civilization that inhabited the planet Mars.
The mysteries of Mars: exploring the surface of mars
--Most laptops are powerful enough to override the communication systems of any invading alien civilization.
What we learn from movies
And what if an imminent cosmic catastrophe forced this technologically superior alien civilization to abandon its planet and seek a home elsewhere in the universe?
Encounter with extraterrestrials

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