The brown dwarf, WISE 0855, is relatively close to Earth (only 7.2 light years away) but also relatively mysterious. Until now. Astronomers at UC Santa Cruz have concluded that there is a strong possibility WISE 0855 has clouds formed from water, or water ice. These are the first clouds to have water outside of the Milky Way. Exciting!

Source: http://phys.org/news/2016-07-astronomers-evidence-clouds-spectrum-coldest.html