Average star

• Average star


  A low mass star, it is condensed in a nebula and begins a nuclear reaction but causes hydrogen to form helium, releasing energy in the form of heat and light. A low mass star will stay in this main sequence face for a long time until it begins to use up all of its hydrogen
• Red giant


  Towards the end of its main sequence phase, a star begins to burn all of its hydrogen. The outer layers will collapse, become heated by the core and expand out forming a red giant
• Planetary nebula


  The star begins to quickly blow off its layers forming a cloud around the star called a planetary nebula. The star in the center of the nebula is very hot but not very bright
• White dwarf


  When a star has burned all its fuel it will collapse under the pressure of gravity. The white dwarf that forms is very small and dense