Concordance Relation -- Abbreviations -- Periodicals, Proceedings, Books, Activities -- Applied Mathematics, Physics -- Astronomical Instruments And Techniques -- Positional Astronomy, Celestial Mechanics -- Space Research -- Theoretical Astrophysics -- Sun -- Earth -- Planetary System -- Stars -- Interstellar Matter, Nebulae -- Radio Sources, X-ray Sources, Cosmic Radiation -- Stellar Systems, Galaxy, Extragalactic Objects, Cosmology. Edited By Siegfried Böhme, Walter Fricke, Inge Heinrich, Wilfried Hofmann, Dietlinde Krahn, Dorothea Rosa, Lutz D. Schmadel, Gert Zech.