One of the most important things on earth is the SUN, the role of the sun and its significance in our life: it gives life, food, light, heat and many more, life cannot exist on earth without it. It is a big ball of gas that comprises 90% mostly hydrogen gas only.
It provides us solar energy, nuclear fusion is produced, which is a process in which small atoms combine to form a heavy atom. It is also said that the earth receives more energy as compared to other planets.
Vitamin D, which is very essential for our healthy body is also generated from sun rays. As there are many more applications of the sun but the most important one is photosynthesis, the process in which green organisms convert light energy into chemical energy.
As Sun is called a ball of fire, but it’s not fired it is the nuclear fusion between hydrogen and helium which creates the heat. It is plasma which is known as fire. It’s a star, a plasma ball, it doesn’t burn it is the light which glows.
Since we are talking about fire, a fire cannot burn without oxygen. But it is different in the case of a star, the absence of oxygen will not halt nuclear fusion. Like the other planets, the sun is also made up of mostly oxygen. It burns hydrogen per second and it has sufficient fuel for the next 5 billion years. It is said that humanity has only 1 billion years left on earth why?
Because after 1 billion year sun will become so hot that it can boil our oceans, water will start evaporating, which will lead to scarcity of water, animals will die due to extreme heat, many people will become victim of major diseases like cancer due to direct sun rays as earth atmosphere cannot bear the heat, and also global warming and greenhouse effects all these objects will be alarming.
It is said that Sun is the most stable one of over 8 billion years, but the solar system is only 4.5 billion old so, it’s not stable.
Even stars also die after its stable phase is over and it is also applicable to the sun. After 8 billion years the sun will lose hydrogen and the only helium will be left around.
Gravitational force is used to pull all the gases when hydrogen uses to present in the sun, but due to scarcity of hydrogen, the star will start burning hydrogen in a higher amount at a higher temperature, which is nothing but helium.
And from that time the sun will be considered as “Red Giant”.Sun increases its’s brightness 10% every billion years.
And the study of some astronomers states that after some billion years sun will become so large that its extreme most layer will reach till the atmosphere of Mercury, Venus, and Earth.
And due to which all oxygen will vanish, all nitrogen will fly away and the atmosphere will be left with carbon dioxide only And due to this red giant and the heat, our planet earth will not be able to survive.so, it will disappear soon.