[{"n": "Planets of the Solar System", "u": "/e/planets-and-dwarf-planets/planets-of-the-solar-system/", "s": "Eight planets orbit the Sun, from rocky worlds to gas giants."}, {"n": "Classical planet", "u": "/e/planets-and-dwarf-planets/classical-planet/", "s": "Seven naked-eye wanderers known since antiquity."}, {"n": "Definition of planet", "u": "/e/planets-and-dwarf-planets/definition-of-planet/", "s": "A contested term for celestial bodies, defined by orbit, roundness, and dominance."}, {"n": "Inferior and superior planets", "u": "/e/planets-and-dwarf-planets/inferior-and-superior-planets/", "s": "Terms distinguishing planets by orbit size relative to Earth."}, {"n": "Planetary mnemonic", "u": "/e/planets-and-dwarf-planets/planetary-mnemonic/", "s": "Phrases used to remember Solar System bodies in order of sidereal period."}, {"n": "Planetary nomenclature", "u": "/e/planets-and-dwarf-planets/planetary-nomenclature/", "s": "IAU system for naming surface features on planets and satellites."}, {"n": "Fictional planets of the Solar System", "u": "/e/planets-and-dwarf-planets/fictional-planets-of-the-solar-system/", "s": "Hypothetical planets persist in fiction beyond scientific refutation."}, {"n": "Planets beyond Neptune", "u": "/e/planets-and-dwarf-planets/planets-beyond-neptune/", "s": "Hypothetical planets beyond Neptune, from Planet X to Planet Nine."}, {"n": "Earth", "u": "/e/planets-and-dwarf-planets/earth/", "s": "The only known planet with liquid surface water and life."}, {"n": "Jupiter", "u": "/e/planets-and-dwarf-planets/jupiter/", "s": "Largest planet in the Solar System, a gas giant with a Great Red Spot."}, {"n": "Mars", "u": "/e/planets-and-dwarf-planets/mars/", "s": "The fourth planet from the Sun, a desert world with polar ice caps."}, {"n": "Mercury (planet)", "u": "/e/planets-and-dwarf-planets/mercury-planet/", "s": "Smallest planet, closest to the Sun, with extreme temperature swings."}, {"n": "Neptune", "u": "/e/planets-and-dwarf-planets/neptune/", "s": "The only planet discovered through mathematical prediction, not direct observation."}, {"n": "Saturn", "u": "/e/planets-and-dwarf-planets/saturn/", "s": "Saturn is a gas giant with rings and the lowest density in the Solar System."}, {"n": "Uranus", "u": "/e/planets-and-dwarf-planets/uranus/", "s": "The seventh planet, a tilted ice giant with extreme seasons."}, {"n": "Venus", "u": "/e/planets-and-dwarf-planets/venus/", "s": "Earth's twin, hottest planet, shrouded in sulfuric acid clouds."}, {"n": "Dwarf planet", "u": "/e/planets-and-dwarf-planets/dwarf-planet/", "s": "A rounded solar orbiter that has not cleared its orbit."}, {"n": "Mesoplanet", "u": "/e/planets-and-dwarf-planets/mesoplanet/", "s": "A planetary body intermediate in size between Mercury and Ceres."}, {"n": "Ceres (dwarf planet)", "u": "/e/planets-and-dwarf-planets/ceres-dwarf-planet/", "s": "Dwarf planet in the main asteroid belt, first discovered asteroid."}, {"n": "Eris (dwarf planet)", "u": "/e/planets-and-dwarf-planets/eris-dwarf-planet/", "s": "Most massive dwarf planet, second-largest, and unvisited by spacecraft."}, {"n": "Exploration of dwarf planets", "u": "/e/planets-and-dwarf-planets/exploration-of-dwarf-planets/", "s": "Dwarf planet exploration began in earnest after Pluto's 2006 reclassification."}, {"n": "Gonggong (dwarf planet)", "u": "/e/planets-and-dwarf-planets/gonggong-dwarf-planet/", "s": "A red, slowly rotating dwarf planet beyond Neptune."}, {"n": "Haumea", "u": "/e/planets-and-dwarf-planets/haumea/", "s": "Dwarf planet with rings, rapid rotation, and disputed discovery."}, {"n": "IAU definition of planet", "u": "/e/planets-and-dwarf-planets/iau-definition-of-planet/", "s": "IAU definition reclassified Pluto as a dwarf planet in 2006."}, {"n": "Makemake", "u": "/e/planets-and-dwarf-planets/makemake/", "s": "A Kuiper belt dwarf planet with a subsurface ocean possibility."}, {"n": "Orcus (dwarf planet)", "u": "/e/planets-and-dwarf-planets/orcus-dwarf-planet/", "s": "A Kuiper belt dwarf planet and the 'anti-Pluto'."}, {"n": "Pluto", "u": "/e/planets-and-dwarf-planets/pluto/", "s": "Dwarf planet in the Kuiper belt, once the ninth planet."}, {"n": "Quaoar", "u": "/e/planets-and-dwarf-planets/quaoar/", "s": "Ringed dwarf planet in the Kuiper belt with an unstable ring system."}, {"n": "Sedna (dwarf planet)", "u": "/e/planets-and-dwarf-planets/sedna-dwarf-planet/", "s": "A distant dwarf planet with the longest known orbital period."}, {"n": "2012 VP113", "u": "/e/planets-and-dwarf-planets/2012-vp113/", "s": "A distant sednoid with the farthest perihelion known."}, {"n": "2014 UZ224", "u": "/e/planets-and-dwarf-planets/2014-uz224/", "s": "A distant possible dwarf planet in the scattered disc."}, {"n": "2017 OF201", "u": "/e/planets-and-dwarf-planets/2017-of201/", "s": "Extreme TNO and dwarf planet candidate discovered in 2025."}, {"n": "2018 AG37", "u": "/e/planets-and-dwarf-planets/2018-ag37/", "s": "Farthest currently observable known object in the Solar System."}, {"n": "2018 VG18", "u": "/e/planets-and-dwarf-planets/2018-vg18/", "s": "A distant trans-Neptunian object nicknamed Farout."}, {"n": "10 Hygiea", "u": "/e/planets-and-dwarf-planets/10-hygiea/", "s": "A large, nearly spherical asteroid possibly qualifying as a dwarf planet."}, {"n": "704 Interamnia", "u": "/e/planets-and-dwarf-planets/704-interamnia/", "s": "Fifth-largest asteroid, possibly a dwarf planet in equilibrium."}, {"n": "(303775) 2005 QU182", "u": "/e/planets-and-dwarf-planets/303775-2005-qu182/", "s": "A large scattered-disc object with an unstable orbit."}, {"n": "20000 Varuna", "u": "/e/planets-and-dwarf-planets/20000-varuna/", "s": "A large, rapidly rotating Kuiper belt object."}, {"n": "28978 Ixion", "u": "/e/planets-and-dwarf-planets/28978-ixion/", "s": "A large plutino in the Kuiper belt."}, {"n": "55565 Aya", "u": "/e/planets-and-dwarf-planets/55565-aya/", "s": "A large, spheroidal Kuiper belt object and dwarf planet candidate."}, {"n": "78799 Xewioso", "u": "/e/planets-and-dwarf-planets/78799-xewioso/", "s": "A dark, mid-sized trans-Neptunian object at the Kuiper belt's inner edge."}, {"n": "(84522) 2002 TC302", "u": "/e/planets-and-dwarf-planets/84522-2002-tc302/", "s": "A red, icy possible dwarf planet in the scattered disk."}, {"n": "90568 Goibniu", "u": "/e/planets-and-dwarf-planets/90568-goibniu/", "s": "A large, hot classical Kuiper belt object and possible dwarf planet."}, {"n": "120347 Salacia", "u": "/e/planets-and-dwarf-planets/120347-salacia/", "s": "A possible dwarf planet in the Kuiper belt with a dark, icy surface."}, {"n": "174567 Varda", "u": "/e/planets-and-dwarf-planets/174567-varda/", "s": "A large, possibly dwarf, Kuiper belt object."}, {"n": "208996 Achlys", "u": "/e/planets-and-dwarf-planets/208996-achlys/", "s": "Third largest member of the plutinos, elongated by rapid rotation."}, {"n": "(278361) 2007 JJ43", "u": "/e/planets-and-dwarf-planets/278361-2007-jj43/", "s": "A large, unnamed trans-Neptunian object and possible dwarf planet."}, {"n": "307261 Máni", "u": "/e/planets-and-dwarf-planets/307261-m-ni/", "s": "A large Kuiper belt object with extreme topography."}, {"n": "(523692) 2014 EZ51", "u": "/e/planets-and-dwarf-planets/523692-2014-ez51/", "s": "A rapidly rotating trans-Neptunian object in the scattered disc."}]