WISE 0855-0714 is a very cool, planetary mass, free-floating Y-dwarf, which could be considered a rogue planet. It is about 7.43 light-years away in the constellation Hydra, and is the closest celestial object to the Sirius system. By default this object will appear completely dark (which is likely its true appearance in visible light); turn up ambient light to see the texture. Moon in image not included.
How to install add-ons? Find out here.