I Supernovae and Their Remnants -- A Recent Study on the Historical Novae and Supernovae 2 -- Models of Type II Supernova and SN 1987A: Observations Versus Theoretical Predictions -- Theoretical Model of SN 1987A and Presupernova Evolution of Massive Stars -- Stellar Evolution and Nucleosynthesis Implications of Supernova 1987A -- X-Ray Observations of Supernova Remnants - The State of the Art - -- Supernova Explosions Inside Pre-existing Wind-Driven Cavities: Spherically Symmetric Models -- Inverse Compton Scattering (ICS) Plays an Important Role in Pulsar Emission -- Line Emission from Magnetized Neutron Stars and Electron Cyclotron Maser Instability -- Radiation Processes in Strong Magnetic Fields -- Radiation Dominated Shocks in a One-Dimensional Plasma Flow -- II Active Galaxies -- Quasar Models -- Accretion Disks in the Centers of Galaxies -- Synchrotron Emission from Shock Waves in Active Galactic Nuclei -- The Masses of Active Galactic Nuclei -- The Study of X-ray Radiation from AGNs -- The Starburst Model for AGNs -- Starburst Galaxies as Recently Formed Companions -- Collision of Giant Molecular Clouds -- III Cosmology -- Cosmic Strings and Galaxy Formation -- The Correlation Strength of Clusters in the Cosmic String Model -- Fractals in the Distribution of Galaxies -- Fractal Turbulence and Origin of Large Scale Structure -- The Two-Point Correlation Function of Groups in CFA Survey -- Large Scale Distribution of Galaxies with Different Luminosity -- The Large Scale Distribution of Abell Clusters -- A Study of the Cosmic Constant H0 with SN1 -- The Large Scale Inhomogeneous Distribution of Ly-Alpha Absorption Lines in the Spectra of Quasars -- Clustering of Quasars and Its Evolution -- Evolution in Quasar Clustering Properties -- The Observational Status of Super Clusters at High Redshifts -- Exact Solutions of the Nonlinear Equations for Self-Gravitating.