A massive star may change its color and size notably, but its high luminosity remains fairly constant.

Question

Quizplus · Accepted Answer

The luminosity of a star is a measure of its total energy output. The luminosity of a star is determined by its mass and radius. A massive star has a high luminosity because it has a large mass and radius. The color and size of a star can change as it evolves, but its luminosity remains fairly constant.

A Massive Star May Change Its Color and Size Notably