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Trans-Neptunian region

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Oort cloud Artist's rendering of the Oort cloud and the Kuiper Belt.    
The Oort cloud ( ort, alternatively the Öpik-Oort Cloud ) is a hypothetical spherical cloud of comet believed to lie roughly 50,000 AU, or nearly a light-year, from the Sun; this distance places the cloud at nearly a quarter of the distance to...
Scattered disc Eris, the largest known scattered disc object (center), and its moon Dysnomia (left of center).    
The scattered disc (or scattered disk) is a distant region of the Solar System that is sparsely populated by icy minor planet known as scattered disc objects (SDOs); a subset of the broader family of trans-Neptunian object (TNOs). The scattered disc...
Kuiper belt Artist's rendering of the Oort cloud and the Kuiper Belt. Location Pluto
The Kuiper belt (, to rhyme with "viper"), sometimes called the Edgeworth-Kuiper belt, is a region of the Solar System beyond the planets extending from the orbit of Neptune (at 30 AU) to approximately 55 AU from the Sun. It is similar to the...