Definitions for "Radiation zone"
Keywords:  unhindered, sun, interior, core, travel
Layer just outside the sun's core, where energy is transported mostly in the form of radiation. This region, while too cool for fusion to occur, is still very dense and hot- about 4 million degrees Kelvin. ( go to first use in the text)
Region of the Sun's interior where extremely high temperatures guarantee that the gas is completely ionized. Photons are only occasionally diverted by electrons, and travel through this region with relative ease.
the are of the sun between the core and the convection zone. Energy radiates through this zone from the core to the convection zone