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The Discovery of Eris, the Largest Known Dwarf Planet

Curated by ACT

Until the discovery of Eris, Pluto was known as the largest Keiper belt object. This dwarf planet has replaced Pluto in size and is accompanied by a satellite that has been given the name Dysnomia. Learn about this distant world here from those who were first to spot it. Images, charts, and illustrations are all included.

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Classroom Considerations
  • Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
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