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I am a believer in aliens.  The science of alien life is called exobiology
The science of extraterrestrial life in all its forms is known as exobiology.
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Extraterrestrial life
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List of Alien characters
"Alien", a science-fiction action horror franchise, tells the story of humanity's ongoing encounters with Aliens: a hostile, endoparasitoid, extraterrestrial species. Set between the 21st and 24th centuries over several generations, the film series centers around a character ensemble's struggle for survival against the Aliens and against the greedy, unscrupulous megacorporation Weyland-Yutani. The main series consists of four films, "Alien" (1979), "Aliens" (1986), "Alien 3" (1992) and "Alien Resurrection" (1997), about Ellen Ripley's fight against the Aliens. Ripley is the sole survivor of an Alien rampage on the space freighter "Nostromo", which leads her to a series of conflicts with the species and Weyland-Yutani.
Extraterrestrial life
Extraterrestrial life, also called alien life (or, if it is a sentient or relatively complex individual, an "extraterrestrial" or "alien"), is life that occurs outside of Earth and that probably did not originate from Earth. These hypothetical life forms may range from simple prokaryotes to beings with civilizations far more advanced than humanity. The Drake equation speculates about the existence of intelligent life elsewhere in the universe. The science of extraterrestrial life in all its forms is known as exobiology. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial life.
List of Ben 10 villains
Below is a list of all the villains who appear in the "Ben 10" universe ranging from "Ben 10", "", "", "", and "Ben 10 (Reboot)". Each of the villains has been sorted into the TV series that he or she debuted in. Voiced by: Vilgax is a warlord who is Ben's first and most recurring nemesis through the series. Being of the Chimera Sui Generis (named after the mythological Chimera) race, who are able to turn into giant squid-like creatures when exposed to water, Vilgax was exiled from his home world for being ruthless, cruel, and power hungry. Soon after, Vilgax meets Maltruant as depicted in the Omniverse series finale which had him indirectly learn of the Omnitrix's existence when attacked by George Washington and a mysterious figure later revealed to be Ben.
Fermi paradox
The Fermi paradox or Fermi's paradox, named after physicist Enrico Fermi, is the apparent contradiction between the lack of evidence and high probability estimates for the existence of extraterrestrial civilizations. The basic points of the argument, made by physicists Enrico Fermi (1901–1954) and Michael H. Hart (born 1932), are: According to this line of reasoning, the Earth should have already been visited by extraterrestrial aliens. In an informal conversation, Fermi noted no convincing evidence of this, leading him to ask, "Where is everybody?" There have been many attempts to explain the Fermi paradox, primarily either suggesting that intelligent extraterrestrial life is extremely rare or proposing reasons that such civilizations have not contacted or visited Earth.
Alien (franchise)
Alien is an American science-fiction horror media franchise centered on the film series depicting Warrant Officer Ellen Ripley (played by Sigourney Weaver) and her battles with an extraterrestrial lifeform, commonly referred to as "the Alien", and depicting android David 8 (portrayed by Michael Fassbender) and his experimentation in creating said lifeform. Produced and distributed by 20th Century Fox, the series began with "Alien" (1979), directed by Ridley Scott. It was followed by three sequels, "Aliens" (1986), "Alien 3" (1992), and "Alien Resurrection" (1997). Scott also directed a prequel series, composed of "Prometheus" (2012) and "" (2017).
List of Ben 10 characters
This is a list of characters in the universe of Cartoon Network's "Ben 10" franchise, which includes "Ben 10", "", "", "", and "Ben 10 (Reboot)". Voiced by:  Portrayed by:  Benjamin Kirby "Ben" Tennyson (alias "Ben 10") is the main character of the franchise. He is a 10-year-old boy child from Bellwood who found the Omnitrix during his summer vacation with his Grandfather Max Tennyson and his cousin Gwen Tennyson. The Omnitrix attached to his wrist and gives him the powers and abilities to become different aliens. He uses these powers to defeat evil while trying to escape the alien warlord Vilgax, who chases after him unstoppably in order to retrieve the Omnitrix.
List of Alien morphs in the Alien franchise
The Alien franchise features several morphs of the Alien life form. This includes different castes, hybrids, mutants, and genetically engineered forms, which are listed below. Aliens are depicted as eusocial life-forms with a defined caste system which is ruled by a queen. Their life cycle comprises several distinct stages: they begin their lives as an egg, which hatches a parasitic larval form known as a facehugger, which then attaches itself to a living host by latching onto its face. The facehugger then "impregnates" the host with an embryo known as a chestburster, which, after a gestation period of several hours, erupts violently from the host's chest resulting in the death of the host.