Both ceres and eris are also classified as dwarf planets 太阳系中的冥王星谷神星及厄里斯，同被列为矮行星。
2.
Pluto together with ceres an asteroid and eris a kuiper belt object are dwarf planets 冥王星连同谷神星小行星和厄里斯柯伊伯带天体则归类为矮行星。
3.
The first minor planet , ceres , was found less than two hundred years ago , by the italian monk and astronomer , giuseppe piazzi 约200年前，首颗小行星谷神星由意大利修士兼天文学家皮亚发现。
4.
The first minor planet , ceres , was found less than two hundred years ago , by the italian monk and astronomer , giuseppe piazzi 约200年前，首颗小行星谷神星由意大利修士兼天文学家皮亚齐发现。
5.
Nasa launches spacecraft named dawn to explore vesta and ceres , the two largest bodies in the asteroid belt situated between mars and jupiter 美国太空总署发射了宇宙飞船黎明，探索在火星与木星间陨石带中的两颗最大的天体灶神星与谷神星。
6.
Nonetheless , the martian curst had stopped moving for the past billions of years . smaller than earth , mars lost its heat much quicker and the once molten crust had fused together 而同时被重新归类为矮行星的还包括厄里斯eris ,前称2003ub313或xena和谷神星ceres 。
