• AAVSO | American Association of Variable Star Observers

      www.aavso.org What Are Variable Stars? Things to Do; Find a Mentor; Online Forum for Help and Advice; Observing Tutorials. 10-Star Tutorial (Visual Observations of Variable Stars)
    • variable star | astronomy | Britannica.com

      www.britannica.com/topic/variable-star Variable star, Algol Encyclopædia Britannica, Inc. any star whose observed ... Variable stars may be classified into three broad types according to the origin ...
    • Chandra :: Educational Materials :: Variable Stars

      chandra.harvard.edu/edu/formal/variable_stars Variable Stars. Stars appear to shine with a constant light; however, thousands of stars vary in brightness. The brightness that a star appears to have (apparent ...
    • Types of Variable Stars

      www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html Variable Stars. When we look up at the night sky it is easy to imagine that the stars are unchanging. Apart from twinkling due to the effects of our atmosphere stars ...
    • Variable Stars Main | AAVSO

      www.aavso.org/variable-stars-main AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484
    • Variable Stars - Astronomical Website of Gerd-Uwe Flechsig

      variable-stars.com Welcome! On this website I provide information and experiences on practical astronomy, brief test reports, and in particular results of my own variable star observations.
    • Variable-star | Define Variable-star at Dictionary.com

      dictionary.reference.com/browse/variable-star Variable-star definition, a star that varies markedly in brightness from time to time. ... Cepheids and novae are examples of intrinsically variable stars.