Edge of the Universe : Nebulae

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Crab Nebula  

Lagoon Nebula 

Tarantula Nebula 

Butterfly Nebula 

Horsehead Nebula 

Orion Nebula 

Flame Nebula 

Eagle Nebula 

Swan Nebula (aka Omega Nebula) 

Ant Nebula

Cat's Eye Nebula

Boomerang Nebula

Eskimo Nebula

Eta Carina Nebula

Pelican Nebula

http://en.wikipedia.org/wiki/Nebula

http://hubblesite.org/gallery/

http://www.nasa.gov/multimedia/imagegallery/iotd.html

http://blog.deepskycolors.com/nebulas.html