Cygnus Nebulosities . ... Credit Copyright: Steve Mandel, Galaxy Images Explanation: Looking toward the constellation Cygnus , a stunning and complex region of nebulae strewn along the plane of our Milky Way galaxy is revealed in this unique wide-angle sky view. Recorded with a filter designed to transmit light emitted by hydrogen atoms, the image emphasizes cosmic gas clouds in a 34 by 23 degree field centered on the well known Northern Cross asterism. ... NASA Official: Jay Norris. ...