Basics of Cosmic Structures

already altitude analysis approximation assumed atmosphere atomic average becomes binding body calculations central centre charge close comparable consequence Consider constant contraction core corresponds course cross density direction distance Earth effect electrons elements energy equal equation equilibrium essentially estimate expect expression fact Fermi Finally flow flux force fraction function fusion given gives gravitational height hydrogen important increase interaction internal ionized ions larger layer leads less limit luminosity magnetic field mass material matter maximum mean medium motion moving neutron star Note nuclear nuclei object observed obtain orbital particles period physics planet planetary plasma possible pressure protons quantum mechanics radiation radius range region relatively respect result rises rotation scale scattering seen simple smaller solar solid stellar structure substituting sufficiently surface temperature thermal unit velocity volume wind