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Need help ASAP : The aging process of a star is referred to as:   

The main sequence

The evolution

White dwarf

The nebula

User Atspulgs
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The evolution, stellar evolution to be specific.
User Selva
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Answer:

Astronomers call a star's ageing a stellar evolution.

Step-by-step explanation:

Astronomers call a star's ageing a stellar evolution.

Stellar evolution is the mechanism through which a star changes constantly with time.Based on star's mass, its lifespan can vary from a several million years for most massive to least massive trillions of years, which is significantly longer than that of the universe itself.

User Badal Shah
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