Stars in a Dusty Sky . ... Credit Copyright: John Davis Explanation: Bright star Markab anchors this dusty skyscape. At the top right corner of the frame, Markab itself marks a corner of an asterism known as the Great Square , found within the boundaries of the constellation Pegasus, the flying horse . ... And even though this line-of-sight looks away from the plane of our Milky Way galaxy, it covers a region known to be filled with nearby molecular clouds. ... NASA Official: Jay Norris. ...