Pluto

noun

/ˈpluːtəʊ/

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one of a number of round objects in space that are not as large as planets but which go around the sun. In August 2006, the International Astronomical Union declared that Pluto should be called a dwarf planet because it is smaller and has different characteristics from the other planets in our solar system; in 2008 it declared that dwarf planets further from the sun than Neptune could also be called plutoids.冥王星（比行星小但圍繞太陽旋轉的星體之一。2006 年 8 月，國際天文學聯合會宣布應將其稱爲矮行星，因爲它比我們太陽系的其他行星小，而且有着不同的特點。2008 年，國際天文學聯合會宣布較海王星離太陽更遠的矮行星也可稱爲類冥矮行星。）Topics Spacec1
Word Originvia Latin from Ploutōn, the Greek name of the god of the underworld.