The Dark River to Antares . ... Credit Copyright: Jason Jennings Explanation: 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. ... Surrounded by dust, Antares , a red supergiant star, creates an unusual bright yellowish reflection nebula. ... Globular star cluster M4 is just seen above and right of Antares, though it lies far behind the colorful clouds, at a distance of some 7,000 light-years. ...