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An extraterrestrial or alien is a lifeform that did not originate on Earth. The word extraterrestrial means "outside Earth". Extraterrestrials are a common theme in modern science-fiction , and also appeared in much earlier works such as the second-century parody True History [ 1 ] by Lucian of Samosata .
The extraterrestrial hypothesis is the idea that some UFOs are vehicles containing or sent by extraterrestrial beings (usually called aliens in this context). [13] As an explanation for UFOs, ETI is sometimes contrasted with EDI (extradimensional intelligence), for example by J. Allen Hynek. [24]
As for the possible risks, theoretical physicist Stephen Hawking warned in 2010 that humans should not try to contact alien life forms. He warned that aliens might pillage Earth for resources. "If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans", he said. [159]
The delusion, if acted out, often leads to behaviors which are abnormal, and out of character, although perhaps understandable in light of the delusional beliefs. Other people who know the individual observe that the belief and behavior are uncharacteristic and alien. Additional characteristic of delusional disorder include the following: [17]
The hypnotized subject's existing beliefs may also lead them to create an alien abduction story under hypnosis; hypnotised individuals tend to believe thoughts, images, or ideas they have while under hypnosis originate from personal experience rather than other sources, such as the therapist's suggestions. [4]
Is life on Earth a cosmic accident, or is the universe teeming with aliens? Science is about to take a fantastic leap forward in answering those questions. Opinion: Science could finally discover ...
Alien pathogens could decimate the human population, which would have no immunity to them, or they might use terrestrial livestock or plants as hosts, causing indirect harm to humans. [45] Invasive organisms brought by extraterrestrial civilizations could cause great ecological harm because of the terrestrial biosphere's lack of defenses ...
Resident Alien (now streaming on Peacock or on the SYFY app!) sees Harry Vanderspeigle — an alien in disguise, who’s true name is unpronounceable — grappling with the conflict between his ...