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.
Montāžas Teksta
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.