A good dictionary definition of a star is a self-luminous celestial body consisting of a mass of gas held together by its own
gravity in which the energy generated by nuclear reactions in the interior is balanced by the outflow of energy to the surface, and the inward-directed gravitational forces are balanced by the
outward-directed gas and radiation pressures.For a far more indepth and explained definition I would suggest taking a look at the Star Types/Evolution page for added clarity and Classifications for a better idea. |
