When we think of color in the night sky, we often think of beautiful images of galaxies and nebulae. Unfortunately, most of the time, their faint, diffuse light shows no color to our human eyes. Stars ...

What you won’t see, though, are green ones. The reason for this is both a fault in the stars and in ourselves: we don’t see ...

Many stargazers are surprised to learn that stars do not all appear the same but actually display different colors. Those that appear white are hotter than those that are orange or red. And bluish ...