Is Sun made of #Gold ? #askNostr The density at the inner edge of the Sun's radiative zone is approximately 20 g/cm³. This is remarkably close to the density of gold, which is 19.32 g/cm. The radiative zone can be considered a wrapper around the Sun's nuclear core. It is a distinct layer that surrounds the core, extending from the outer edge of the core to about 70% of the Sun's radius. However, this distance seems tiny when we consider the time it takes for photons traveling at the speed of light. To pass through the Sun's radiative zone is estimated a photon takes between 100,000 to 170,000 years. Which means Sun's Radiative zone is about 130 ,000 light years - give or take !