Welcome to the Mysteries of the Sun. This unique NASA resource on the web, in print, and with companion videos introduces Heliophysics: the study of the Sun's influence throughout the solar system and, in particular, its connection to the Earth and the Earth’s extended space environment. Learn about topics such as Space Weather, Solar Variability, the Heliosphere, Earth’s Magnetosphere, and the Earth’s Upper Atmosphere. Come and explore our Sun!
