Our sun will become a red giant in about five billion years. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A red giant is a dying star in ...

But each star has a limited supply of fuel, and it is estimated that in about 5 billion years, our Sun will cease hydrogen fusion and enter its red giant phase. That’s the simple story.

Doradus, a red giant star 180 light-years away in the Dorado constellation. The star has a diameter about 350 times that of the sun, and it serves as a preview for our sun’s future. In about 5 ...

A giant explosion lashed out from the sun this week, sending a flood of solar material careening toward Earth faster than forecasters realized. It started with a giant loop of plasma arcing from ...

The sun erupted in a dazzling spectacle on Monday ... Related: Astrophotographer captures stunning of giant sunspot The lack of apparent eruptive material during the M-class solar flare is ...

can be linked to the dynamo mechanism operating inside the sun," co-author Zsolt Kővári explained in a statement. "The large-amplitude variations in the brightness of the red giant XX Tri have ...