Granules: These are small, bright, and roughly circular features that cover the photosphere. They are caused by convection currents that bring hot gas from the Sun's interior to the surface, where it cools and sinks back down.
Supergranules: These are larger and less defined than granules, with diameters of up to 30,000 km. They are also caused by convection, but on a larger scale.
Sunspots: These are dark, cooler regions on the photosphere. They are caused by intense magnetic fields that suppress the flow of heat from the Sun's interior.
Faculae: These are bright regions that are located near sunspots. They are associated with strong magnetic fields and are thought to be caused by the upwelling of hot gas.
Filaments: These are long, dark streaks that appear on the photosphere. They are actually prominences, which are large clouds of hot gas that are suspended above the Sun's surface. However, they appear dark because they are cooler than the surrounding photosphere.
Plages: These are bright regions in the photosphere that are associated with active regions. They are caused by the enhanced emission of light from hot gas.
In addition to these features, the photosphere also exhibits light bridges, which are bright streaks that cross through sunspots. They are thought to be caused by the upwelling of hot gas from the Sun's interior.
The photosphere is a dynamic and ever-changing region of the Sun, and the structures that appear within it provide valuable information about the Sun's magnetic field, convection, and energy transport.
