The story of a red giant star and a nearby black hole is less a tidy cosmic romance than a forensic case file, pieced ...

You live in a galaxy packed with black holes that never announce themselves. They do not blaze in X-rays or glow with stolen ...

Close companions can influence stellar evolution in many ways. While some companions can be detected around young stellar objects, direct observational evidence of companions around asymptotic giant ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An artist's visualization of some of the spots on red giant XX Trianguli. | Credit: Viktor Varga ...

"Throwing a close companion into the mix could possibly wreak further havoc on the already complicated processes surrounding ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost ...

It's also dubbed the "most spotted star in the sky." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Sunspots, which are temporarily darkened ...

Astronomers modeled sunspot activity on a nearby red giant star to learn about its chaotic interior. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...