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Writer Fuel: Astronomers Discover “Impossible” Ring Around a Dwarf Planet

Quaoar
Image credit: ESA, CC BY-SA 3.0 IGO

Astronomers have discovered an entirely new ring system within the solar system, and it’s located at such a great distance from its dwarf planet parent that it should be impossible.

The ring surrounds Quaoar, which is around half the size of Pluto and located beyond Neptune. It is only the third ring to be found around a minor planet and the seventh ring system in the solar system, with the most famous and well-studied rings surrounding the giant planets Saturn, Jupiter, Neptune and Uranus.

“The six [previously known] planets with ring systems all have rings which are quite close to the surface of the planet. So this really challenges our ring formation theories,” study co-author Vik Dhillon, a professor of physics and astronomy at the University of Sheffield in England, told Live Science. “It was previously thought to be impossible to have rings that far out, so in a nutshell, the ring of Quaoar is a real challenge to explain theoretically.”

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Full Story From Live Science

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