The Astronomy Center has provided educational resources to introductory astronomy educators since 2003. Over the past 20 years, the rapid pace of discovery has rendered some of our linked resources obsolete. Thus, the Astronomy Center will be decommissioned on March 1, 2022. Our highest quality resources will be retained on ComPADRE.org.
This site is a collection of lecture notes for a course called the universe of galaxies. These notes discuss the integrated properties, classification, stellar and gaseous content of galxies; galaxies within, gasesous content, and the evolution of clusters of galaxies; QSOs, Seyfert nuclei, radio galaxies, and the central engine of active nuclei; the Gunn-Peterson effect and QSO absorption systems; observations and theories of galaxy formation and evolution; cosmological models, dark matter, and gravitational lensing.
%0 Electronic Source %A Keel, Bill %D 2000 %T The Universe of Galaxies %V 2025 %N 20 April 2025 %9 text/html %U http://pages.astronomy.ua.edu/keel/galaxies/intro.html
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