Educator Guide: This Dwarf Planet Hosts an Odd Ring

Dwarf planet Quaoar, shown in this artist's illustration, is only the third small object in the solar system with a known ring.
Illustration Credit: NASA, G. Bacon/STScI; Science Credit: NASA, M. Brown/Caltech
About this guide
In science, the exceptions offer researchers a chance to think differently about a concept they thought they understood. In this Guide, students will learn how astronomers use a concept called the Roche limit and how a ring around a dwarf planet does not follow the Roche limit rules.
This Guide Includes:
Defining and defying Roche limits
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