
About Our Ads About Us Advocacy Blog Help School Library Products SHOP Login Subscribe Contributors History Citations Print Email Share A A Tweet Sun i Help us expand this topic . Submit Contribution Images Videos Interactives Sun star around which Earth and the other components of the solar system revolve . It is the dominant body of the system , constituting more than 99 percent of its entire mass . The Sun is the source of an enormous amount of energy , a portion of which provides Earth with the light and heat necessary to support life The Sun is classified as a G2 V star , with G2 standing for the second hottest stars of the yellow G class—of surface temperature about 5,800 kelvins K and the V representing a main sequence or dwarf , star , the typical star for this temperature class .