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Ahuna Mons,〔(Gazetteer of Planetary Nomenclature – Ahuna Mons )〕 formerly referred to as the pyramid-shaped mountain on Ceres,〔For example (), (), (), ()〕 is a large mountain that protrudes above otherwise smooth terrain on the dwarf planet and asteroid Ceres. Its nature is unknown: it is not an impact feature and it appears to be the only mountain of its kind on Ceres. Bright streaks run top to bottom on its slopes; these streaks are thought to be salt, similar to the better known Cerian bright spots.〔http://gizmodo.com/ceres-mysterious-bright-spots-arent-made-of-ice-after-a-1734112941〕 It is named after the traditional post-harvest festival ''Ahuna'' of the Sumi Naga people of India. The mountain was discovered on images taken by the ''Dawn'' spacecraft in orbit around Ceres in 2015. It is estimated to be about 6 km (4 mi or 20,000 ft) high and wide at the base. ==Gallery== Image:PIA19578-Ceres-DwarfPlanet-Dawn-2ndMappingOrbit-image10-20150614-rotated180.jpg|Ceres viewed by ''Dawn''. The north face of Ahuna Mons projects above the center of the limb. North is down. Image:PIA19574-Ceres-DwarfPlanet-Dawn-2ndMappingOrbit-image6-20150606-crop300to400.jpg|Context view of the mountain surrounded by lightly cratered terrain. Bright spots on Ceres can be seen at 11:00. North is up. Image:PIA19618-Ceres-PyramidShapedMountain-Dawn-20150806.jpg|Computer-generated image of the north face of Ahuna Mons. Vertical dimension is exaggerated by a factor of five. Image:PIA19606-Ceres-Dawn-GlobalMap-MtnCrop-20150728.jpg|Elevation map of Ahuna Mons (red) and the impact crater seen at the bottom of the preceding image (blue). North is up. Image:PIA19995-Ceres-DwarfPlanet-Dawn-3rdMapOrbit-HAMO-image53-20150928.jpg|Context view of Ahuna Mons (upper left) (28 September 2015). Image:PIA20130-Ceres-DwarfPlanet-Dawn-3rdMapOrbit-HAMO-image67-20151014.jpg|Context view of Ahuna Mons (upper right) (14 October 2015). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ahuna Mons」の詳細全文を読む スポンサード リンク
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