What does the color of a star indicate?

1 Answer
Apr 23, 2018

Heat.

Explanation:

The color of a star indicates the heat and luminosity of the star. If a star is yellow or orange, it is relatively cool. If it is red, it is hotter. Blue is the hottest. Black dwarfs are the coolest stars. The color also has to go with the size. Blue giants, as it suggests in the name, are the biggest. Then reds, oranges, and yellows are smallest. However, the dwarfs are the smallest. Usually, the hotter stars are the older ones, even though the dwarfs are the oldest this time.