Northern Cygnus . ... Credit Copyright: Robert Gendler Explanation: Bright, hot, supergiant star Deneb lies at top center in this gorgeous skyscape . The 20 frame mosaic spans an impressive 12 degrees across the northern end of Cygnus the Swan . Crowded with stars and luminous gas clouds along the plane of our Milky Way Galaxy, Cygnus is also home to the dark, obscuring Northern Coal Sack Nebula, extending from Deneb toward the bottom center of the view. ... NASA Official: Jay Norris. ...