Why are red giants cooler than other stars? Astronomy Stars, Black Holes, and Galaxies Life and Death of Stars 1 Answer Suryin =) Nov 23, 2015 Because it shine red. Explanation: Cooler stars shine RED. Answer link Related questions Is it possible for the earth to be sucked into a black hole? If so, what would happen? What is a black hole? What happens to a galaxy when a black hole is formed within it? If you went into a black hole would you end up in another dimension? What makes a black hole black? Could the big bang have started with a black hole exploding? What creates a black hole? Will we ever have the ability to create one? How are black holes formed? Are black holes a theory of science or a fact? What is inside a black hole? See all questions in Life and Death of Stars Impact of this question 1395 views around the world You can reuse this answer Creative Commons License