SUN is a star in which all planets revolved. It is a very large ball of glowing with heat plasma. It is located at the middle of our solar system. The sun supplies all the power we required for our life here on planet- earth. The sun is composed of 74% hydrogen and 25% helium, together with other trace elements. It is also highly magnetic because it is made of plasma. Sun is like the earth which has also north and south magnetic poles. The value of activity on the sun rises and falls over an 11- year cycle. The sun use to revolve once for about 1 month on its axis; nevertheless, this is not the perfect estimation for the reason that the sun is a huge ball of plasma. The other portions of the sun rotates rapidly than the other parts, for this explanation it's difficult to tell and say when the sun has a full rotation finished. The sun's age has been 4.6 billion years and expected to last for another 7 billion years or so. If the usable hydrogen in the core runs out, the sun will get enlarge outer into a red giant, the inner planets will be probably consumed (including Earth). It will then shed off its outward layers and will have collapsed inward to become a white stunted star.
PARTS OF THE SUN
The sun is composed of Core, Radioactive zone, Convective zone and the Photosphere. CORE – Is the inner part layer of the sun. In this innermost layer, the reactions of nuclear fusion are taking place. The temperature of this layer is 15.7 million Kelvin and the pressure is adequate to support the nuclear fusions.
RADIOACTIVE ZONE—is the exterior layer. In this outer layer, the protons of gamma radiation constructed in the inner part (core) are uttered and take in by hydrogen atom. One proton can obtain 100,000 years in getting through the radioactive zone.
CONVECTIVE ZONE—is the outside portion of the exterior layer (radioactive zone), the bubbles or the heat of plasma goes rise and fall like a lava lamp in this layer.
PHOTOSPHERE—this is the surface of the sun. The average temperature of this surface is about5, 800 Kelvin. In this portion, protons are produced inside the sun and will be the last to get the vacuum of space. However, if you could move down into the sun, you would discover the temperature and pressure growing until you reached the core of the sun. In this surface, the portion is combining together to shape atoms of helium. As a result, it will release a very large amount of energy. This energy is very much necessary to our planet Earth for our existence and the living plants and animals too.
The radius of the sun is 695,500 kilometers which is 109 times the earth's radius or 6.955A-108 meters. The sun's diameter is 1,392,000
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