The Sun:

 The Sun:

 The sun is a perfect sphere of hot, glowing gas. It is a source of power that lies buried deep in the central core, where a nuclear furnace rages non-stop, turning matter into pure heat and light. Slightly bigger than a typical star, the sun is large enough by volume to swallow 1.3 million earth. It consists of 98.8% of all matter in the solar system and the force of gravity generated by this enormous mass keeps the planets trapped in orbit around it. Seen from Earth the Sun life-sustaining source of light and warmth that shines steadily on us. Closer views, however, reveal a world of astonishing violence its seething surface bursting wost eruption that hurls fiery gases into space.

INSIDE THE SUN :

 Sun's interior is divided into three distinct layers: the core, the radiative zone, and the convective zone. All three are made solely of gas, but the gas gets hotter and denser towards the center. In the core, the temperature soars to 15 million degrees Celcius (27 million Fahrenheit) and the gas is 150 times denser than water.

1 CORE:

  Inside the hot dense core, the process of nuclear fusion releases energy. every second 620 billion tons of hydrogen are fused into helium in the core.

2 RADIATIVE ZONE :

Outside the core is the radiative zone, which is not dense enough for nuclear fusion to take place. Energy from the core seeps very slowly starts out through this layer. 

3 CONVECTIVE ZONE :

In the convective zone, vast bubbles of hot gas rise to the surface, cool, and then fall, transforming energy from the Sun's heart to the exterior.

4 PHOTOSPHERE :

 The sun's apparent surface is called the photosphere. The energy escapes into space from here as light.

5 GRAINY SURFACE : 

The bubbles of hot gas that rise inside the sun make its surface look grainy. There are some 4 million granules on the surface, each about 1000 km wide and lasting for around eight minutes.

6 SUNSPOT :

Cooler darker patches on the sun are called sunspots. The number of sunspots rises and falls over an 11year cycle.

7  SOLAR FLARE :

   A sudden burst of energy from the sun's surface is called a solar flare. Flares are often followed by a coronal mass ejection.