SOLAR SYSTEM

Detailed explanation-1: -Below the photosphere, the gas is denser and hotter and therefore radiates plenty of light but that light cannot escape from the sun because it is blocked by the outer layers of gas. So you cannot detect light from these deeper layers. Above the photosphere, the gas is less dense and so is unable to radiate much light.

Detailed explanation-2: -The photosphere is the densest part of the solar atmosphere, but is still tenuous compared to Earth’s atmosphere (0.01% of the mass density of air at sea level).

Detailed explanation-3: -The Layers of the Sun beneath the Visible Surface We will begin with the core and work our way out through the layers. The Sun’s core is extremely dense and is the source of all of its energy. Inside the core, nuclear energy is being released (in ways we will discuss in The Sun: A Nuclear Powerhouse).

Detailed explanation-4: -At the photosphere, temperature and density reaches its lowest point – approximately 5, 700 K and a density of 0.2 g/m3 (about 1/6, 000th the density of air at sea level). Last, there is the sun’s atmosphere, which is made up of three distinct layers – the chromosphere, the transitional region, and the corona.

Detailed explanation-5: -Even astronomers can’t see beyond the photosphere-they depend on light reaching their instruments, and the gases below the photosphere are so dense that the light they emit can’t actually escape them. That means that everything we know about the deeper layers of the sun, we know from observing the photosphere.