"I part out thrusting branches, and come in beneath the blessed and the blessing trees." "Though I am silent, there is singing around me." "Though I am dark, there is light around me." "Though I am heavy, there is flight around me." | "Woods" by Wendell Berry
The Hertzsprung-Russell diagram (HR diagram, for short, shown above.) A single star doesn’t tell you all that much about stars in general. But if you plot the brightnesses and colors of many stars, patterns begin to emerge – such as the distinctive broad band of the “main sequence” bisecting the HR diagram diagonally, the realm of the giants and supergiants to its upper right and the White Dwarfs below on the left.