Astronomers study stars by looking at the different colors of light they emit—colors they capture and analyze using spectroscopy. Now a team led by Université de Montréal's Étienne Artigau has ...

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 ...

Red supergiants are a class of star that end their lives in supernova explosions. Their lifecycles are not fully understood, partly due to difficulties in measuring their temperatures. For the first ...