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Astronomers find evidence of water clouds in first spectrum of coldest brown dwarf
Since its detection in 2014, the brown dwarf known as WISE 0855 has fascinated astronomers. Only 7.2 light-years from Earth, it is the coldest known object outside of our solar system. Astronomers have now obtained an infrared spectrum of the brown dwarf using the Gemini North telescope in Hawaii. Among the findings is strong evidence for the existence of clouds of water or water ice, the first such clouds detected outside of our solar system.