Granulation and Heat Transport

Granulation represents the tops of convection cells that are transferring heat from below the solar surface to the surface. In that sense, granules are a little like the tops of cumulus clouds in the Earth's atmosphere, which are also associated with convection currents.

We shall have more to say about the transport of heat in stars later. Convection will be found to be one of the most important ways in which a star moves its heat from the core to the surface.