On a star 180 light-years away, astronomers have just imaged the surface changes that take place due to the constant cycling of heat within. The three resulting snapshots represent a fortnight of ...

For most of us, best imagination of cosmic scale takes us to the size of the Sun. After all, the closest star to the Earth is 109 times bigger than our home planet, and Earth is already one giant rock ...

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 ...

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 ...