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Cathing the Light: Nebulae Images Thumbnail Index
A colorful look at the various nebulae with these pictures taken by Jerry Lodriguss. Each picture has background information about the nebula.
Space Telescope Science Institute
Hubble Site: Planetary Nebula
This site from Hubblesite provides a brief news article as well as colorful pictures of a nearby Planetary Nebula. Offers links to images, video, fast facts, a question and answer section as well as related links.