The sun's core is a massive nuclear reactor producing energy through the fusion of hydrogen into helium. This process releases tremendous energy in the form of light and heat that sustains life on Earth.
The sun's atmosphere comprises several layers, including the photosphere, chromosphere, and corona. Each layer plays a critical role in solar phenomena like sunspots and solar flares.
The solar wind is a stream of charged particles released from the upper atmosphere. It travels across the solar system, influencing planetary magnetospheres and the dazzling northern lights.