这些尘埃云来自柯伊伯带(Kuiper belt)，柯伊伯带是海王星之外的一片区域，充满了小型的冰封物体，冥王星就包括在柯伊伯带中。
The cloud of dust comes from the Kuiper belt, the region beyond Neptune that contains small, icy bodies, including Pluto.
一项对柯伊伯带-太阳系学海王星轨道之外的远距区域的调查，找到了三个新的冰封世界，可能像冥王星那样的矮星。
A new survey of the Kuiper belt - the distant area of the solar system beyond the orbit of Neptune - has turned up three new icy worlds that may be dwarf planets like Pluto.
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