Life Cycle Of Stars

Birth Of Star

• initially form from clouds ofSTARSandGAS
• Force Of Gravity makes the dust particles come spiralling together.       - gravitational energy is converted intoHEATenergy + tempRISES
• When temp gets high enough,HYDROGENnuclei undergo nuclear fusion to formHELIUMnuclei
• gives out massive amounts ofHEATandLIGHT

Main Sequence Of Star

• enters a long stable period - where the gravitaional inwards force balances with the convectional outward force. (lasts about 10 billion years)
• eventually the hydrogen begins…