The Sun is covered in dark patches bigger than Earth. A powerful flare has already erupted, with more likely coming.

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 ...

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 ...