The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across.
Quite evident in the photograph are the blue reflection nebulae that surround the brighter cluster stars. Low mass, faint, brown dwarfs have also been found in the Pleiades.
(Editors' note: The prominent diffraction spikes are caused by the telescope itself and may be either distracting or provide aesthetic enhancement, depending on your point of view.)
Image Credit & Copyright: Robert Gendler