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1. Dictionary

   a·li·en

   /ˈālyən/

   adjective

   • 1. belonging to a foreign country or nation. Similar foreignoverseasnonnativeexternaldistantremoteOpposite native
   • ▪ unfamiliar and disturbing or distasteful: "bossing anyone around was alien to him" Similar unfamiliarunknownunheard offoreignstrangepeculiaroddbizarreoutlandishremoteexoticnovelincompatible withunusual foropposed toconflicting withcontrary toadverse toin conflict withat variance withantagonistic tounacceptable torepugnant tohostile toinimical torare:oppugnant toOpposite familiarfamiliar
   • ▪ relating to or denoting beings supposedly from other worlds; extraterrestrial: "an alien spacecraft" Similar extraterrestrialotherworldlyunearthlyMartianVenutianJovianOpposite earthly
   • ▪ (of a plant or animal species) introduced from another country and later naturalized.

   noun

   • 1. a foreigner, especially one who is not a naturalized citizen of the country where they are living: "an illegal alien" Similar foreignerforeign nationalnonnativeimmigrantemigrantémigréincomernewcomervisitoroutsiderstrangerOpposite native
   • ▪ a hypothetical or fictional being from another world. Similar extraterrestrialETMartianVenutianJovianinformal:little green man
   • ▪ a plant or animal species originally introduced from another country and later naturalized.

   Word Origin Middle English: via Old French from Latin alienus ‘belonging to another’, from alius ‘other’.

   Derivatives

   • 1. alienness noun

   Scrabble Points: 5

   • A

     1

   • L

     1

   • I

     1

   • E

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   • N

     1

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   More definitions, origin and scrabble points

2. www.britannica.com › science › extraterrestrial-lifeExtraterrestrial life | Definition, SETI, & Facts | Britannica

   www.britannica.com › science › extraterrestrial-life

   • Cached

   4 days ago · extraterrestrial life, life that may exist or may have existed in the universe outside of Earth. The search for extraterrestrial life encompasses many fundamental scientific questions. What are the basic requirements for life? Could life have arisen elsewhere in the solar system? Are there other planets like Earth?

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4. www.britannica.com › topic › unidentified-flying-objectUnidentified flying object (UFO) | History, Sightings, & Facts

   www.britannica.com › topic › unidentified-flying-object

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   1 day ago · unidentified flying object (UFO), any aerial object or optical phenomenon not readily identifiable to the observer. UFOs became a major subject of interest following the development of rocketry after World War II and were thought by some researchers to be intelligent extraterrestrial life visiting Earth.

5. www.spacecentre.co.uk › news › space-now-blogWhere are the Aliens? - spacecentre.co.uk

   www.spacecentre.co.uk › news › space-now-blog

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   4 days ago · Aliens in the Solar System. Orbiting our Sun are eight planets. Of these, half are gassy – meaning that they are home to ferocious winds, howling cyclones, and thousands of miles of endless atmosphere with no solid surface underneath to be found. The other half (including Earth) are rocky.

6. www.britannica.com › science › extraterrestrial-lifeExtraterrestrial life - Exoplanets, Habitability, Astrobiology

   www.britannica.com › science › extraterrestrial-life

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   4 days ago · They have been observed via several different means: by “wobble,” which detects the changing wavelength of a star’s light as the star gets closer and then farther away from Earth as a massive planet tugs it from the center of the system; by transit, which detects the dimming of a star as a planet crosses between it and Earth ...

7. en.wikipedia.org › wiki › Science_fictionScience fiction - Wikipedia

   en.wikipedia.org › wiki › Science_fiction

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   3 days ago · Science fiction (sometimes shortened to SF or sci-fi) is a genre of speculative fiction, which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel universes, and extraterrestrial life.

8. www.space.com › plate-tectonics-intelligent-alien-life-rareThe great silence: Just 4 in 10,000 galaxies may host intelligent...

   www.space.com › plate-tectonics-intelligent-alien-life-rare

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   2 days ago · "A value of 0.0004 means that there could be as few as 4 civilizations per 10,000 galaxies," said Taras. ... That's with the assumption that alien life was DNA life. And an Earth like environment.

9. en.wikipedia.org › wiki › Apocalyptic_and_post-apocalyptic_fictionApocalyptic and post-apocalyptic fiction - Wikipedia

   en.wikipedia.org › wiki › Apocalyptic_and_post-apocalyptic_fiction

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   1 day ago · At the time, the armaments available to the world's various air forces were not powerful enough to produce such a result. Apocalyptic and post-apocalyptic fiction is a subgenre of science fiction in which the Earth's (or another planet's) civilization is collapsing or has collapsed.