The temperature in the Sun's core is about 27 million degrees Fahrenheit (15 million degrees Celsius), hot enough to make fusion reactions work perfectly. 5 million gigapascals. Think about this: the ...

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.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Sharpest-ever view of the Sun’s surface, using the NSF ...

Diagram of the Sun’s interior and outer atmosphere, showing the core, radiative and convection zones — separated by the tachocline — and surface features such as sunspots, flares, the chromosphere and ...