... The familiar Eagle Nebula glows bright in many colors at once. ... Pillars of dark dust nicely outline some of the denser towers of star formation. ... The Dark River to Antares . ... Connecting the Pipe Nebula to the colorful regon near bright star Antares is a dark cloud dubbed the Dark River, flowing from the picture's left edge. Murky looking, the Dark River's appearance is caused by dust obscuring background starlight, although the dark nebula contains mostly hydrogen and molecular gas. ...