Life Cycles of Stars

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  • Created by: _lakmini
  • Created on: 08-10-12 18:37

Stars are initially formed from clouds of gas and dust called nebulas. The force of gravity makes the clouds of gas and dust spiral in together. Gravitational energy is then converted into heat energy so the temperature rises.

When the temperatue gets high enough, hydrogen nuclei undergo thermonuclear fusion to form helium nuclei and give out massive amounts of energy. It then creates an outward pressure to balance the force of gravity pulling everything inwards. A Star is born. At this stage, it is called a…


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