Brown Dwarfs and Super Planets Red Giants, White Dwarfs, and Brown Dwarfs are all different kinds of stars. Brown dwarfs are actually not quite stars, but not quite planets, either.
Brown dwarfs are somewhere in-between stars and planets.
They are not big enough or heavy enough to shine the way most stars do. Brown dwarfs shine mainly in infrared light, instead of the visible light that is emitted by the stars we see with our eyes. The image at left is an artist's depiction of what a brown dwarf might look like. Scientists believe that most of the matter in the Universe hasn't been discovered yet. There may be many brown dwarfs out there that we have never seen.