We don't have to worry about the death of the sun any time soon, but when it does happen, will the Earth be able to survive?

Astronomers have long suspected that there was at least one exoplanet orbiting Barnard's Star — a red dwarf with a mass ...

Stars like our sun fuse hydrogen in their cores into helium ... At this stage, the star becomes a large red giant. Because a red giant is so large, its heat spreads out and the surface ...

The next category of stars, which likely includes our sun, will eventually run out of hydrogen, in the core. At the center, the star then begins to fuse their helium into carbon. It grows in size as ...

Our Sun belongs to a spiral galaxy called the Milky ... larger nuclei begin to form and the star may expand to become a red giant. The most massive stars expand to form red supergiants.