The sun's magnetic activity follows an 11-year cycle. Over the course of a solar cycle, the sun's magnetic activity comes and goes. During solar maximum, large sunspots and active regions appear on ...

Beneath the Sun's outer shell, a layer of highly ionized, boiling hot gas flows all the way down to 200,000 kilometers below the surface of the star. Temperatures of this plasma can reach up to 45,000 ...

A helioseismology study maps the flow of plasma inside the Sun and supports a model that also explains the sunspot cycle. The results of a new helioseismology study suggest that the Sun’s meridional ...

The sun's convection zone plays a key role in the generation and evolution of the Sun's magnetic field. Analyzing data sets spanning more than 20 years, researchers have obtained the most ...

Helioseismology was used to measure the Sun's meridional flow (in miles per hour). This flow controls the evolution of the global magnetic field and the number of sunspots. This material relates to a ...