Understanding the sun

heliophysics (physics of the Sun): encompasses environmental science, a unique hybrid between meteorology and astrophysics, To understand the changing flow of energy and matter throughout the Sun, Heliosphere, and Planetary Environments,To explore the fundamental physical processes of space plasma systems, and to define the origins and societal impacts of variability in the Earth-Sun System.  as a single connected system is the goal of the Science Mission Directorate's Heliophysics Research Program.
 In addition the study includes the interaction of solar plasma and radiation with Earth, the other planets, and the Galaxy. By analyzing the connections between the Sun, solar wind, planetary space environments, and our place in the Galaxy, through complementary missions of various sizes, timely development of enabling and enhancing technologies, and acquisition of knowledge through research, analysis, theory, and modeling. NASA are gradually uncovering the fundamental physical processes that occur throughout the Universe. Understanding the connections between the Sun and its planets will allow us to predict the impacts of solar variability on humans, technological systems, and even the presence of life itself, it is one of four divisions within NASA's Science Mission Directorate which includes Earth Science, Planetary Science and Astrophysics).