Eleventh planet term "planet" was redefined to exclude the new category of dwarf planets (just as some planets had earlier been recategorised as asteroids). In 2006 Pluto, Eris, Haumea, Makemake, and (in the inner Solar System) the asteroid Ceres were reclassified as dwarf planets. Eleventh planet Eleventh planet (of the Solar System) may refer to Vesta, the eleventh object to be named a planet, later to be reclassified as an asteroid; Uranus, the eleventh planet from the Sun upon Vesta's discovery, though this was quickly superseded by new discoveries; or Haumea, which would be the eleventh planet if the classification advocated by
A Beautiful Planet found to be orbiting within its star's habitable zone, or orbital area where liquid water could conceivably exist without freezing or vaporizing. In other words, it was the first discovery of an Earth-sized planet on which life could reside. The "Kepler" in this exoplanet's name comes from the fact that it was discovered by the Kepler Space Telescope, or "NASA Discovery Mission Number 10," a spacecraft observatory which is designed to find exoplanets in our region of the Milky Way Galaxy that are Earth-size and smaller, and that are within the habitable zone. The planet orbits Kepler-186, a red dwarf