A decade of observation of the sun with NASA's Solar Maximum satellite has led to many discoveries in solar physics and atomic physics. While the analysis of the data is still continuing, a large body of literature has been published interpreting results from the mission. This book collects a review of these results in a single volume, aiming to provide a snapshot of the state of knowledge of solar physics. It intends to present a useful tool for both teaching and research, as well as a guide to planners of future missions to investigate the sun. Individual chapters cover topics such as: variations in the solar irradiance; active regions of the sun; the corona - elemental abundances; coronal mass ejections; chromospheric evaporation; solar flares; ultraviolet flares; nonthermal flare of flares; solar-terrestrial science; comet observations; and cosmic studies.