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"extract": "A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System. The prototypical dwarf planet is Pluto, which for decades was regarded as a planet before the \"dwarf\" concept was adopted in 2006.\nMany planetary geologists consider dwarf planets and planetary-mass moons to be planets, but since 2006 the IAU and many astronomers have excluded them from the roster of planets.",
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"extract": "A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System. The prototypical dwarf planet is Pluto, which for decades was regarded as a planet before the \"dwarf\" concept was adopted in 2006.\nMany planetary geologists consider dwarf planets and planetary-mass moons to be planets, but since 2006 the IAU and many astronomers have excluded them from the roster of planets.",
"extract_html": "\u003cp\u003eA \u003cb\u003edwarf planet\u003c/b\u003e is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System. The prototypical dwarf planet is Pluto, which for decades was regarded as a planet before the \"dwarf\" concept was adopted in 2006.\nMany planetary geologists consider dwarf planets and planetary-mass moons to be planets, but since 2006 the IAU and many astronomers have excluded them from the roster of planets.\u003c/p\u003e",
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"extract": "Eris is the most massive and second-largest known dwarf planet in the Solar System. It is a trans-Neptunian object (TNO) in the scattered disk and has a high-eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory\u2013based team led by Mike Brown and verified later that year. It was named in September 2006 after the Greco\u2013Roman goddess of strife and discord. Eris is the ninth-most massive known object orbiting the Sun and the sixteenth-most massive in the Solar System. It is also the largest known object in the Solar System that has not been visited by a spacecraft. Eris has been measured at 2,326\u00a0\u00b1\u00a012 kilometres (1,445\u00a0\u00b1\u00a07\u00a0mi) in diameter; its mass is 0.28% that of the Earth and 27% greater than that of Pluto, although Pluto is slightly larger by volume. Both Eris and Pluto have a surface area that is comparable to that of Russia or South America.",
"extract_html": "\u003cp\u003e\u003cb\u003eEris\u003c/b\u003e is the most massive and second-largest known dwarf planet in the Solar System. It is a trans-Neptunian object (TNO) in the scattered disk and has a high-eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory\u2013based team led by Mike Brown and verified later that year. It was named in September 2006 after the Greco\u2013Roman goddess of strife and discord. Eris is the ninth-most massive known object orbiting the Sun and the sixteenth-most massive in the Solar System. It is also the largest known object in the Solar System that has not been visited by a spacecraft. Eris has been measured at 2,326\u00a0\u00b1\u00a012 kilometres (1,445\u00a0\u00b1\u00a07\u00a0mi) in diameter; its mass is 0.28% that of the Earth and 27% greater than that of Pluto, although Pluto is slightly larger by volume. Both Eris and Pluto have a surface area that is comparable to that of Russia or South America.\u003c/p\u003e",
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"extract": "The Samuel Oschin telescope, also called the Oschin Schmidt, is a 48-inch-aperture (1.22\u00a0m) Schmidt camera at the Palomar Observatory in northern San Diego County, California, United States. It consists of a 49.75-inch (1.264\u00a0m) Schmidt corrector plate and a 72-inch (1.8\u00a0m) (f/2.5) mirror. The instrument is strictly a camera; there is no provision for an eyepiece to look through it. It originally used 10-inch (25\u00a0cm) and 14-inch (36\u00a0cm) glass photographic plates. Since the focal plane is curved, these plates had to be preformed in a special jig before being loaded into the camera.",
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"extract": "The Palomar Observatory is an astronomical research observatory in the Palomar Mountains of San Diego County, California, United States. It is owned and operated by the California Institute of Technology (Caltech). Research time at the observatory is granted to Caltech and its research partners, which include the Jet Propulsion Laboratory (JPL), Yale University, and the National Astronomical Observatories of China.",
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"text": "The dwarf planet Eris was discovered by a team using images from the Samuel Oschin telescope at Palomar Observatory.",
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"text": "The dwarf planet Eris was discovered by a team using images from the Samuel Oschin telescope at Palomar Observatory.",
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