Exoplanet Host Star Radiation and Plasma Environment.- Stellar Winds in Time.- Magnetic Fields and Winds of Planet Hosting Stars.- Observations of Exoplanet Atmospheres and Surrounding Environments.- Types of Hot Jupiter Atmospheres.- Suprathermal Particles in XUV-Heated and Extended Exoplanetary Upper Atmospheres.- Stellar Driven Evolution of Hydrogen-Dominated Atmospheres from Earth-like to Super-Earth-type Exoplanets.- Interpretations of WASP-12b Near-UV Observations.- The Effects of Close-In Exoplanets on Their Host Stars.- Magnetosphere Environment from Solar System Planets/Moons to Exoplanets.- Detection Methods and Relevance of Exoplanetary Magnetic Fields.- Alfvén Radius - A Key Parameter for Astrophysical Magnetospheres.- Living with Future Space-Based Exoplanet Search and Characterization Missions.- The World Space Observatory-UV Project as a Tool for Exoplanet Science.- Ground-Based Exoplanet Projects.- References.- Index.