lifecycle of Stars

the maroon boxes are the stages,

the blue the explanation

and the pinky ones, extra info

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  • Lives of Stars
    • Dust and Gas particles
      • Mainly Hydrogen
      • these collapse due to gravity -spiral in and become concentrated, form:
        • Protostar
          • Hot ball of gas
          • name for "star to be"
          • Main Sequence Star
            • Enters a long stable period
              • heat from nuclear fission provides outward force
                • this balances the force of gravity-which pulls everything in
                  • star maintains energy due to the vast amount of HYDROGEN left to react
                    • when Hydrgen runs out, star swells into:
                      • Red Supergiant
                        • undergoes more fusion=heavier elements formed
                          • through nuclear fusion
                          • expand and contract several times
                            • explode into:
                        • Supernova
                          • explode into:
                          • heavier elements ejected into universe
                            • can form planets/stars
                          • Neutron Star
                            • very dense core
                          • Black hole
                            • if the star is big enough
                      • Red Giant
                        • Main Sequence Star
                          • Enters a long stable period
                            • heat from nuclear fission provides outward force
                              • this balances the force of gravity-which pulls everything in
                                • star maintains energy due to the vast amount of HYDROGEN left to react
                                  • when Hydrgen runs out, star swells into:
                                    • Red Supergiant
                                      • undergoes more fusion=heavier elements formed
                                        • through nuclear fusion
                                        • expand and contract several times
                                        • Supernova
                                          • heavier elements ejected into universe
                                            • can form planets/stars
                                          • Neutron Star
                                            • very dense core
                                          • Black hole
                                            • if the star is big enough
                                      • Red Giant
                                        • stars the size of sun
                                        • these become unstable= ejects outer layer of dust&gas as PLANETARY NEBULA
                                          • Turn into hot, dense, solid core
                                            • White Dwarf
                                              • cools into:
                                              • Black Dwarf
                                                • Disappears
                                        • White Dwarf
                                          • cools into:
                                          • Black Dwarf
                                            • Disappears
                                    • heavier elements can also be formed (gold, iron, etc)
                            • Give out a lot of light and heat
                            • smaller objects can also be formed-these are planets
                          • stars the size of sun
                          • these become unstable= ejects outer layer of dust&gas as PLANETARY NEBULA
                            • Turn into hot, dense, solid core
                        • heavier elements can also be formed (gold, iron, etc)
                • Give out a lot of light and heat
                • smaller objects can also be formed-these are planets
          • Protostar
            • Hot ball of gas
            • name for "star to be"
        • Big Bang
          • all the energy in the world today was created here( during the big bang)
      • A start is born
        • Hydrogen nuclei react with eachother-FUSE- to form HELIUM

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