This is the third such dwarf planet discovered in recent years. Until recently, scientists thought that this area of space (just outside our solar system) was void of objects of any size but now, after this third discovery are re-assessing that theory.
Also mentioned in this article: In a separate discovery published in Nature, a team led by Felipe Braga-Ribas of the National Observatory in Brazil found a pair of rings around an asteroid-like interloper in the outer system named Chariklo.
Other than the gas giants, this is the first object found that also supports rings.
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