One of the largest known stars in the cosmos is poised for catastrophe. After witnessing the massive object undergo a ...

New studies reveal how metallicity and stellar evolution determine whether massive stars expand into red supergiants prior to ...

One of our universe's biggest stars has dramatically turned into a rare, yellow 'hypergiant' star, and astronomers aren't sure when it will go supernova.

When most people think of a supernova, they're thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They've used up ...

The star’s surface temperatures had increased by more than 1,000 degrees Celsius (1,800 Fahrenheit), turning its signature red color to yellow. It also shrank as a result of becoming hotter, going ...

A red supergiant star has expelled the largest cloud of gas and dust ever seen in the process of being blown off one of these stellar behemoths. The vast size and intricacy of the cloud suggests that ...

Astronomers report the rapid transition of WOH G64 from a red supergiant to a yellow hypergiant, based on photometric and spectroscopic observations published in Nature Astronomy.

One of the largest known stars in the universe underwent a dramatic transformation in 2014, new research shows, and may be preparing to explode. A study led by Gonzalo Muñoz-Sanchez at the National ...

Because dust blocked out shorter, bluer wavelengths of light, the star also appeared surprisingly red. Study co-author Aswin Suresh, a graduate student at Northwestern’s Weinberg College of Arts and ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Saturday evening's meeting of the crescent moon and distant ...

Red supergiant stars represent a pivotal phase in the late-stage evolution of massive stars. Betelgeuse, one of the nearest and most studied red supergiants, offers a unique opportunity to explore a ...