Astronomers identify purest, most massive brown dwarf
(PHYSorg.com Space & Earth)

An international team of astronomers has identified a record breaking brown dwarf (a star too small for nuclear fusion) with the `purest` composition and the highest mass yet known. The object, known as SDSS J0104+1535, is a member of the so-called halo - the outermost reaches - of our Galaxy, made up of the most ancient stars. The scientists report the discovery in Monthly Notices of the Royal Astronomical Society.