Geospace shi ne yankin sararin samaniya kusa da Duniya, ciki har da saman yanayi da magnetosphere. Wadannan Van Allen radiation belts suna cikin geospace. Ƙasashen waje na geospace shine magnetopause, wanda ke samar da haɗin kai tsakanin magnetosphere na duniya da iska mai iska. Ƙasashen ciki shine ionosphere. Yanayin sararin samaniya-yanayin yanayi na geospace yana shafar halayyar Sun da iska mai iska; batun geospace yana da alaƙa da nazarin heliophysics na Sun da kuma tasirinsa a kan taurari na Solar System.
belts radiation da kuma ionosphere