The Solar System – The Sun

The Solar System – The Sun

The Sun is approx 93 million miles which is equal to 150 million kilometres away from the Earth and as we know and without the energy of the Sun, life cannot exist on Earth.

The Sun is considered to be the 4.5 billion old stars with a conclusion as a hot glowing ball that contains gases such as hydrogen and helium and lies at the centre of the Solar System. It is the largest member of our Solar System and would require approx 1.3 million Earths to cover its whole area. 

What is SUN?

The Sun is considered to be the star at the centre of our Solar System. It is basically a large spinning ball of gases that provides heat and light to the other planets of the Solar System. It is also considered as a medium-sized yellow star which is approx 150 million km far from the planet Earth.  The Sun is basically a member of the 200 billion stars that are present in the Milky Way galaxy. It is estimated that the Sun is approx 30,000 light-years away from the centre of the Milky Way galaxy. 

The scientists estimate that the Sun is made up of 70 % of Hydrogen along with 27 % of Helium and the rest with other elements. The surface of the Sun has a temperature of more than 5000 degrees Centigrade whereas; the core of the Sun consists of a temperature which is a few million degrees. Scientists believe that even if the Sun dies today, it can provide light to Earth for many upcoming years.

Birth of Sun along with solar system

The Sun is expected to have formed 4.5 billion years ago. The Sun is considered to be the star’s second generation as it doesn’t only burn hydrogen but also different other elements such as helium and metals. These elements are estimated to be formed when the biggest explosion took place and led to the formation of the Solar System.

Nuclear Fusion is a kind of reaction that takes place in the centre of the Sun along with being responsible for the production of huge amounts of energy. This energy later turns into heat and light which is liable for the warmth of the Solar System along with making the Solar System brighter. It has been calculated that the Sun has the ability to source energy for 5 billion years and later on it will explode leaving the clouds of gases that will be responsible for the destruction of all the planets. 

Characteristics of Sun

The diameter of the Sun is approximately defined as 1.4 million km, which means it is 10 times larger than Jupiter along with being 100 times larger than the diameter of the Earth. About 1.3 million Earths can fit into the Sun, however, it is not considered as big as the other stars of the universe. The conversion of hydrogen to helium takes place in the Core of the Sun. Therefore the energy that is considered as the outcome of this reaction travels to the outer part of the Sun in the form of Radiation. The surface of the Sun is named the Photosphere whereas the lower atmosphere is considered as the Chromospheres’ having a temperature of approx 7000 degrees Centigrade. The upper atmosphere is named Corona which is only visible at the time of Eclipse. This part of the Sun is considered one of the hottest parts because of the millions of degrees of temperature.

Phases of Sun in Eclipses

The Eclipse of the Sun is defined as one of nature’s most picturesque events. This takes place when the shadow of the moon falls over the Earth. The time when the Sun, the Moon, and the Earth are in the correct line then the shadow of the Moon falls over the Earth. This causes darkness as similar tonight as the Sun gets blocked from the views. This basically happens for a few minutes and the phenomenon is considered an Eclipse. This shadow of the Moon has a width of a few hundred kilometres; however, people from several parts of the world come to see this magnificent phase of nature. 

The Sun is the source of heat, light, and food on earth along with the air also that we breathe. This provides power to the atmosphere in order to give us winds and rain. Even the fuels such as coal and oil that we use come from those animals that lived millions of years ago and are directly dependent on the Sun for their existence. The sun provides heat which is responsible also for the evaporation of the ocean water. Green plants use the rays of the Sun in order to convert carbon dioxide into oxygen making our environment sustainable.


The researcher has mentioned the origin of the solar system with respect to the Sun. The researcher has also described the surface conditions of the Sun along with the atmospheric conditions also.  The researcher has also described the reaction that takes place in the Sun along with the gases that are responsible for these reactions. The researcher has also defined the existence of life in respect to the Sun along with the important role played by the Sun in making the environment sustainable. Moreover, the researcher has also described the approximate size of the Sun.