Main+Sequence+Stars+2A

Main Sequence Stars- sun, red giant, white dwarf,black dwarfs,yellow dwarf,brown dwarf,black dwarf

Main sequence is a stage where most of the Stars spend their lives. Main sequence stars are indicated by there energy. The mass of a star depends on the amout of fuel available. A stars purpose is to maintain a balance and it is done by pushing out gas pressure and gravity pulling in atoms. You could compare the life of a star to the life of a human being. protostar-fetus:Fetus fusion ignition-main sequence:infancy-young adult Red Giant/supergiant:middle age White Dwarf/black hole:old age-death B,A,F,G,K,M B being the hottest and M being the coolest the bigger the star the more fuel its going to use up which means less time fusing hydrogen and helium


 * =|| [[image:http://library.advanced.org/12523/media/Star_O.gif width="160" height="120" align="center"]] 'O' || [[image:http://library.advanced.org/12523/media/Star_B.gif width="160" height="120" align="center"]] 'B' || || [[image:http://library.advanced.org/12523/media/Star_A.gif width="160" height="120" align="center"]] 'A' || [[image:http://library.advanced.org/12523/media/Star_F.gif width="160" height="120" align="center"]] 'F' || || [[image:http://library.advanced.org/12523/media/Star_G.gif width="160" height="120" align="center"]] 'G' || [[image:http://library.advanced.org/12523/media/Star_K.gif width="160" height="120" align="center"]] 'K' || || [[image:http://library.advanced.org/12523/media/Star_M.gif width="160" height="120" align="center"]] 'M' ||= The spectral classes **O, B, A, F, G, K, and M** can be remembered with the acronym //Oh, be a fine girl and kiss me.// ||
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In the center of a star hydrogen is converted into helium through nuclear fusion. Nuclear fusion: One of the two main processes in a star in which hydrogen is blown outward from the star's center. PROPERTIES OF MAIN SEQUENCE STARS Hydrostatic Equilibrium-The inward acting force, gravity, is balanced by outward acting forces of gas pressure and the radiation pressure. The bigger the star the more gravitational pull its goin to get inwards and as that gas compresses more star will start releasing pressure back. When the temperature of the gas reaches about 10K it stars to fuse hydrogen and releases energy which will help balance the star. Our sun is a Main Sequence star that will be that way for about 10 billion years before turning into a red giant.