This resource covers Seyfert galaxies, radio galaxies, BL Lacertae (BL Lac) objects, quasars, supermassive black holes, determining masses in galactic centers using the virial theorem, and a model for active galactic...

This educational website provides animations of black holes, galaxies, and quasars. It uses either mpeg or quick time. Both of these formats are available in high and low resolution formats. There are links to podcasts,...

Created by William Keel of the University of Alabama, this site offers a large amount of information concerned with Seyfert galaxies, radio galaxies, and Quasars. Under each topic are about a dozen links to images with...

This site is an astronomy tutorial posted by Gene Smith, a professor at UC San Diego. The site contains information on quasars and active galaxies. Information is included on gravitational lensing, black holes, and...

This website, containing information from the Sloan Digital Sky Survey, provides projects and activities for advanced astronomy students. Students compare the spectrums of stars and quasars. Students will also...