Other
Planetary Nebulae Observer Home Page
This home page is linked to detailed descriptions of nebulae types, shapes, and structures and their relationship to stellar evolution, a historical perspective on the discovery of nebulae, a gallery of images, and other related resources.
NASA
Nasa Star Child: The Milky Way
The information, geared mainly for younger viewers, provides simple and basic information about the Milky Way, and includes several embedded links to related information.
University of Cambridge
University of Cambridge: Cosmology: Galaxies
This site from the Cambridge Relativity provides a brief description of the structure of the Milky Way galaxy. The parts described are the disc, bulge, and halo.
NASA
Nasa: Wilkinson Microwave Anisotropy Probe (Wmap): The Milky Way
Description of the three major components of the Milky Way galaxy as well as images and resources for further reading.