The red giant stage occurs after the main sequence stage in a star’s lifetime. When a star runs out of its nuclear fuel, it grows to be many hundreds of times its original size and cools, making it appear red.
Storyboard-Text
RED GIANT The red giant stage occurs after the main sequence stage in a star’s lifetime. When a star runs out of its nuclear fuel, it grows to be many hundreds of times its original size and cools, making it appear red.