Detail View: NASA Astronomy Picture of the Day Collection: Cygnus Nebulosities

Title: 
Cygnus Nebulosities
Explanation: 
Looking toward the constellation Cygnus [ http://www.hawastsoc.org/deepsky/cyg/index.html ], a stunning and complex region of nebulae strewn along the plane of our Milky Way [ http://home.arcor-online.de/axel.mellinger/ ] galaxy is revealed in this unique wide-angle [ http://www.galaxyimages.com/gallery.html ] sky view. Recorded with a filter designed to transmit light emitted by [ http://csep10.phys.utk.edu/astr162/lect/light/ absorption.html ] hydrogen atoms, the image emphasizes [ http://www.galaxyimages.com/CygnusH-a.html ] cosmic gas clouds in a 34 by 23 degree field centered on the well known Northern Cross asterism. Bright, hot, supergiant star Deneb [ http://www.astro.uiuc.edu/~kaler/sow/deneb.html ] (the top of the cross) and popular celestial sights such as the North America [ http://antwrp.gsfc.nasa.gov/apod/ap000501.html ] and Pelican [ http://antwrp.gsfc.nasa.gov/apod/ap020829.html ] emission regions, the IC 1318 "butterfly [ http://www.astropix.com/HTML/E_SUM_N/GAMMA.HTM ]", and the Crescent [ http://antwrp.gsfc.nasa.gov/apod/ap031016.html ] and Veil nebulae [ http://antwrp.gsfc.nasa.gov/apod/ap030204.html ] can be identified by placing your cursor over the image. Silhouetted by the glowing interstellar [ http://www.internal.org/view_poem.phtml?poemID=120 ] clouds and crowded star fields, the dark Northern Coal Sack is also visible, part of a series of obscuring dust clouds forming the Great Rift in the Milky Way [ http://home.arcor-online.de/axel.mellinger/mwpan45_c.html ]. These Cygnus nebulosities are all located about 2,000 light-years away. Along with the Sun, they lie within the Orion spiral arm [ http://www.anzwers.org/free/universe/5000lys.html ] of our galaxy.
Credit and Copyright: 
Steve Mandel, Galaxy Images [ http://www.galaxyimages.com/ ]
facet_where: 
Goddard Space Flight Center (GSFC)
facet_what: 
Cygnus
original url: 
http://antwrp.gsfc.nasa.gov/apod/ap031023.html
UID: 
SPD-APOD-ap031023