Sol, our sun, is the most important source of heat, energy and light for our planet and our survival. So what makes this crucial part of our Solar System tick? Let’s take a look inside the sun in 4k UHD.
Inside the Sun
The Sun has different layers and regions, each is unique and has different reactions and processes occurring within it. The regions are:
- The Core
- The Radiative Zone
- The Convection Zone
- The Photosphere
- The Chromosphere
- The Corona
1. The Core of the Sun
The core is the innermost region and is known as the heart of the Sun. The core of the Sun is blindingly bright, if you could look at it directly you would go blind. The core is around 27 million degrees Fahrenheit and is under tremendous pressure from the other layers and the Sun’s own gravity.
The core is the place where all the energy that you see is produced. It consists of billions of hydrogen atoms. The energy that is released during just one second of solar fusion within the core is more energy than from 1.8 billion nuclear bombs exploding at the same time.
2. The Radiative Zone
The next region after the core is The Radiative Zone. Photons from this zone take more than 100,000 years to escape from the sun to be emitted as light. It takes this much time to escape the sun because they do not move in a straight line. The photons crash into each other and zigzag back and forth and around the dense inner regions.
Note all stars have a Radiative Zone, it depends on the size of the star.
3. The Convection Zone
The outermost region of the Sun‘s interior is The Convection Zone. The temperature and density start decreasing as we move away from the core of the Sun. The temperature of the Convection Zone is 3.5 million degrees Fahrenheit.
Photon‘s begin travelling faster in this region as it is not as densely packed. This is the last region the photon has to go through to reach the surface of the Sun. Hot bubbles of plasma also rise from this surface and travel towards the surface.
4. The Photosphere
This is the outermost visible region of the Sun and is the region that releases the energy as sunlight, which was produced more than 100,000 years ago inside the core of the Sun. The photosphere is the least thick visible surface of the Sun with a temperature of around 10,000 degrees Fahrenheit.
5. The Chromosphere
The Chromosphere is the outer reddish glowing region of the Sun. This region is only visible to us during a solar eclipse. In this region, the level of density of plasma is significantly reduced. It is about 10,000 times less dense than the plasma in the photosphere region.
6. The Corona
The final and outermost layer of the Sun is called the Corona. This layer is so thin that it is not visible because of the thickness of the Photosphere. The Corona can only be seen with special telescopes during the time of an eclipse when the Photosphere region is covered by the Moon.