A 417-year-old drawing by Johannes Kepler has just helped solve a major solar puzzle. The 1607 sketch features sunspots that ...

Few things seem as immutable than the Sun —after all, it’s been fusing hydrogen for five billion years, and it’ll keep on ...

Add Yahoo as a preferred source to see more of our stories on Google. What type of star it is: A yellow dwarf star The sun is the star at the center of our solar system. It's the largest, brightest ...

A total solar eclipse will be visible from Texas to Maine on Monday. This cosmic event occurs when the Earth, sun, and moon align perfectly. One diagram shows how a total solar eclipse works, and why ...

The sun is the star at the center of our solar system. It's the largest, brightest and most massive object in the solar system, and it provides the light and heat that life on Earth depends on.