Main sequence star

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The main sequence is the stable phase of a star's lifetime, when outward pressure from internal fusion process using hydrogen for fuel is balanced by the inward force of self-gravitation.[1] In the evolutionary picture of stellar evolution, this phase is usually the longest phase of a star's lifetime, lasting anywhere from 20 million years to 100 billion.[2] While creation scientists agree such stars have a stable light output and are generally stable, they dispute the time periods over which evolutionary scientists claim it lasts as well as it being a part of stellar evolution as unobservable and so not falsifiable.[3][4]

Our Sun is a main sequence star.


  1. Star Formation And Evolution. Retrieved on 2019-03-31.
  2. Main Sequence Stars: Definition & Life Cycle. Retrieved on 2019-03-31.
  3. DO STARS EVOLVE?. Retrieved on 2019-03-31.
  4. Stellar Evolution and Millions of Years. Retrieved on 2019-03-31.