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 ...

Every star you see at night broadcasts its temperature through color, yet one shade sits permanently off the menu. The ...

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 ...