The photosphere is the portion of the sun at which the energy in the convective zone becomes visible light. While it is considered the surface of the sun, stars do not have a liquid or solid surface (except late-life neutron stars). The photosphere is also the part of the sun where granules and sunspots become visible.
| Temperature | Size in sun | Density | Composition |
|---|---|---|---|
| 5,777 kelvin | 100 kilometres | 3x10^-4g/cm^3 | Visible light (photons) |