Older stars tend to be duller than younger stars. As stars age, they generally exhaust their nuclear fuel and can become cooler and less luminous, making them appear "duller" in terms of brightness compared to younger, more active stars.
What is true of older stars?(1 point) Responses They tend to be larger than younger stars. They tend to be larger than younger stars. They tend to be smaller than younger stars. They tend to be smaller than younger stars. They tend to be duller than younger stars. They tend to be duller than younger stars. They tend to be brighter than younger stars.
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