Size: 1.0x

Rotation Speed: 0.1x

A main sequence star is in the stable part of its life, fusing hydrogen into helium in its core.

Hydrogen → Helium

Hydrogen: 70%, Helium: 28%, Other: 2%

Core: 15 million K, fusion reactions

Radiative Zone: Energy transport via radiation

Convective Zone: Energy transport via convection

Photosphere: Visible surface

Chromosphere: Lower atmosphere

Corona: Extended outer atmosphere