• Introduction to cosmology

    by Matts Roos
    2003, Wiley

  • Binocular Highlights

    by Gary Seronik
    May 1, 2007, Sky Publishing

  • Understanding Variable Stars

    by John R. Percy
    June 11, 2007, Cambridge University Press

  • An introduction to the science of cosmology

    by Derek J. Raine
    2001