The Sun: A Mystery - What Drives Its Activity Cycle?

The sun is a giant ball of plasma, but we don't know exactly how it works. Scientists are using a variety of tools to study the sun's interior and learn more about its nature and impact on our planet.

What's inside the sun?

Scientists are trying to answer specific questions about the sun's interior, such as its exact composition, how energy travels from its core to its surface, what causes its magnetic field to flip, and what will happen to its core when it runs out of fuel.