Faint neighbors in space

In recent years, astronomers have discovered a handful of dwarf galaxies right next door in the extended halo of the Milky Way, obscured by the gas and dust of our galactic plane. Now, astronomers sifting through data from the Sloan Digital Sky Survey (SDSS) have announced the discovery of two sparse, low-luminosity Milky Way neighbors. Both dwarf satellite galaxies are invisible in most telescopes.