apod
06-03-08, 11:37 AM
http://antwrp.gsfc.nasa.gov/apod/image/0806/darkriver_ruiz.jpg (http://antwrp.gsfc.nasa.gov/apod/image/0806/darkriver_ruiz_big.jpg) The Dark River to Antares
Credit & Copyright: Máximo Ruiz (http://www.telefonica.net/web2/astromodelismo/index.htm)
Explanation: Connecting the Pipe Nebula (http://antwrp.gsfc.nasa.gov/apod/ap020526.html) to the bright star Antares is a flowing dark cloud nicknamed the Dark River (http://www.astropix.com/HTML/D_SUM_S/PIPE.HTM). The murkiness of the Dark River (http://antwrp.gsfc.nasa.gov/apod/ap030928.html) is caused by absorption of background starlight by dust (http://antwrp.gsfc.nasa.gov/apod/ap030706.html), although the nebula contains mostly hydrogen (http://periodic.lanl.gov/elements/1.html) and molecular gas. Antares (http://www.astro.uiuc.edu/~kaler/sow/antares.html), the bright star (http://antwrp.gsfc.nasa.gov/apod/ap980726.html) that appears yellow just below the center of the frame, is embedded in the colorful Rho Ophiuchi (http://antwrp.gsfc.nasa.gov/apod/ap070903.html) nebula clouds. The Dark River, pictured above (http://www.telefonica.net/web2/astromodelismo/Web%20Astronomia/Web%20enlazables/Fotos%20propias/Gran%20campo/index.htm) across the upper left, spans over 20 times the angular diameter of the Moon (http://antwrp.gsfc.nasa.gov/apod/ap051113.html) and lies about 500 light years (http://chandra.harvard.edu/photo/cosmic_distance.html) distant. Other types of nebulas (http://en.wikipedia.org/wiki/Nebula) visible here include red emission nebula (http://antwrp.gsfc.nasa.gov/apod/emission_nebulae.html) and the blue reflection (http://antwrp.gsfc.nasa.gov/apod/reflection_nebulae.html) nebula.
Source (http://antwrp.gsfc.nasa.gov/apod/ap080603.html)
Credit & Copyright: Máximo Ruiz (http://www.telefonica.net/web2/astromodelismo/index.htm)
Explanation: Connecting the Pipe Nebula (http://antwrp.gsfc.nasa.gov/apod/ap020526.html) to the bright star Antares is a flowing dark cloud nicknamed the Dark River (http://www.astropix.com/HTML/D_SUM_S/PIPE.HTM). The murkiness of the Dark River (http://antwrp.gsfc.nasa.gov/apod/ap030928.html) is caused by absorption of background starlight by dust (http://antwrp.gsfc.nasa.gov/apod/ap030706.html), although the nebula contains mostly hydrogen (http://periodic.lanl.gov/elements/1.html) and molecular gas. Antares (http://www.astro.uiuc.edu/~kaler/sow/antares.html), the bright star (http://antwrp.gsfc.nasa.gov/apod/ap980726.html) that appears yellow just below the center of the frame, is embedded in the colorful Rho Ophiuchi (http://antwrp.gsfc.nasa.gov/apod/ap070903.html) nebula clouds. The Dark River, pictured above (http://www.telefonica.net/web2/astromodelismo/Web%20Astronomia/Web%20enlazables/Fotos%20propias/Gran%20campo/index.htm) across the upper left, spans over 20 times the angular diameter of the Moon (http://antwrp.gsfc.nasa.gov/apod/ap051113.html) and lies about 500 light years (http://chandra.harvard.edu/photo/cosmic_distance.html) distant. Other types of nebulas (http://en.wikipedia.org/wiki/Nebula) visible here include red emission nebula (http://antwrp.gsfc.nasa.gov/apod/emission_nebulae.html) and the blue reflection (http://antwrp.gsfc.nasa.gov/apod/reflection_nebulae.html) nebula.
Source (http://antwrp.gsfc.nasa.gov/apod/ap080603.html)