The color of stars has been noted from antiquity and the names of many stars reflect their visible color. The red Antares is the heart of the scorpion. The brightest star Sirius is derived from the ...

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 ...

Imagine gazing up at the night sky and spotting a brilliant emerald star twinkling among the familiar reds, yellows, and blues. Yet despite the universe’s vast stellar palette, this particular hue ...

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 ...

Stellar spectral classification utilizes seven main classes (O, B, A, F, G, K, M), ordered by decreasing surface temperature, with each class further subdivided into numerical subclasses (0-9) ...