All Things Space, UFOs, etc.Rare quadruple star system could unlock brown dwarf mystery Posted on August 23, 2025 by Administrator The exciting discovery of an extremely rare quadruple star system could significantly advance our understanding of brown dwarfs, astronomers with the Royal Astronomical Society said on August 19, 2025. These mysterious objects are too big to be considered a planet but also too small to be a star because they lack the mass to keep fusing atoms and blossom into fully fledged suns.