American Association of Variable Star Observers -- The largest organization for variable stars: gives professional & amateur collaboration, research, & analysis of variable star observations. Visit

The Top Twelve Naked-Eye Variable Stars -- An article by John Isles from Sky & Telescope Magazine. Visit

Skyandtelescope.com - Variable Stars -- Observing variable stars. Visit

The Cepheid Distance Scale: A History -- A critical review of the Cepheid distance scale, from its inception, to the Hipparcos mission & beyond. Visit

Astronomical Society of South Australia -- ASSA's variable star group. News, FAQ, charts, and software. Visit

Astronomy On-Line -- Collaborative Project aimed at getting new people involved in variable star observing. Visit

A Ritzian Interpretation of Variable Stars -- A study on the nature of the speed of light in space using light curves & spectroscopic observations of variable stars as evidence. Visit

Brigham Young University Variable Star Database -- Currently contains 311 stars which have been classified as Delta Scutis or Gamma Doradus in some published source. Visit

Information Bulletin on Variable Stars -- The IBVS is a bulletin of Commissions 27 & 42 of the International Astronomical Union, published by Konkoly Observatory, Budapest, Hungary. Visit

The Minima of Algol -- An article by Alan MacRobert from Sky & Telescope Magazine about the star Algol (Beta Persei) was the first eclipsing variable star ever discovered. Visit