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The Life Cycle of an Average Star (Our Sun)
An article about Astronomy & Deep Space
Refer to the HR Diagram (Hertzsprung-Russell Diagram) (Characteristics of Stars chart) page 15 of the Earth Science Reference Tables
A star like our sun… it is AVERAGE in all aspects!
- “Dust” (gases and debris) come together under the force of gravity to form a PROTOSTAR
- The star has moderate mass, not very hot, moderate energy, and is relatively stable.
- Evolves and remains on the main sequence for about 10 billion years
- After about 10 billion years, the star becomes starts to evolve and first changes into a RED GIANT
- After some time, the star pulses and explodes outwards (SUPERNOVA)
- Evolves into a WHITE DWARF
To summarize…
Protostar → stable (main sequence) → red giant → white dwarf
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