Attached Link: http://www.renderosity.com/viewed.ez?galleryid=438739&Start=19&Artist=ICM&ByArtist=Yes

This Image has the nebula on a sphere & I used Universe Image Creator for the stars. I masked the stars & pasted them in, erasing the masked stars to fit the scene. I also made the sphere semi transparent & put a strong radial light on the outside of the shpere. Have Fun!

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Ockham's razor- It's that simple