Life Cycle of Stars
First step: Nebula
Birth of A Star
The hydrogen fuel runs out and the star has entered the old age stage. If the star wants to maintain equilibrium between gravity and gas pressure, it needs increased temperatures in the core to re-ignite fusion. The star is forced to burn helium in an effort to maintain stability. The core contracts the atoms that are packed together so they are even tighter than before. The outer shell has expanded in an effort to help heat from the core from escaping into space.
Origin Of Elements
Hydrogen is found in stars and took up most of the stars mass.
Iron is found in many objects. Iron's symbol is Fe and its safe to have in food and Crusader's used iron for their swords in ancient times.
Oxygen is what we use to breathe. Without oxygen we would not be able to live and breathe.
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