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"Alien visitation" describes fiction in which extraterrestrial beings arrive at, encounter, or make contact with humanity—ranging from secretive landing in a rural town to overt global contact or invasion. Stories in this category explore the practical and emotional consequences of that encounter: communication and miscommunication, cultural and political upheaval, scientific curiosity, fear and xenophobia, and the clash of technologies or moral frameworks. Tone can vary from wonder and first-contact diplomacy to horror, thriller, or satire, and plots often center on discovery, abduction, diplomacy, quarantine, or conflict. Whether used for hard science speculation, social allegory, or pulpy spectacle, the genre focuses on the moment and aftermath of extraterrestrial arrival and how individuals and societies respond.

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