The sun is one of the numerous stars in the sky. It is the closest star to the earth and lies at the center of the solar system. One rotation of the sun takes 27 days. It is 4.5 billion years old, which is thought to be its mid age. This means it shall keep shining for about five billion more years to come.
The sun's surface is known as the photosphere. Its temperature is about 5,778 K. The sun's core is, however, much hotter, with its temperature being about 15.7 million K. All this energy is produced via nuclear fusion. This is a nuclear reaction where two hydrogen nuclei fuse to form one helium nucleus, accompanied by release of energy.
The sun is 149.6 million kilometers from the earth. Its diameter is 1.392 million kilometers, which reflects an equatorial circumference of 4.379 million kilometers. Compared to the corresponding measurements of the earth, these are 109 times more. The surface area of the sun is 6.0887 trillion kilometer square, about 11,990 times the earth. Its volume exceeds that of earth by 1.3 million.
The warmth from the sun achieves the earth through radiation. This vitality is known as sunlight based vitality. Note that the planet ingests just a little parcel of this vitality, the rest is reflected back to space. The consumed warmth is in charge of life on earth. It is additionally the wellspring of the world's atmosphere, wind patterns and water cycle.
Plants make their own food through photosynthesis, a process that is dependent on solar energy. Take note that all living organisms get their food directly or indirectly from plants. In addition, the sun is the cause of energy available in fossils. Examples of such energy sources are petroleum and coal.
Providing unlimited light and heat, the sun is the main source of energy to the earth. Extra applications of solar energy include lighting, generating electricity and in enhancing growth of plants in green houses. Considering all these factors, it is true to say that there can be no life on earth without the sun.
The sun's surface is known as the photosphere. Its temperature is about 5,778 K. The sun's core is, however, much hotter, with its temperature being about 15.7 million K. All this energy is produced via nuclear fusion. This is a nuclear reaction where two hydrogen nuclei fuse to form one helium nucleus, accompanied by release of energy.
The sun is 149.6 million kilometers from the earth. Its diameter is 1.392 million kilometers, which reflects an equatorial circumference of 4.379 million kilometers. Compared to the corresponding measurements of the earth, these are 109 times more. The surface area of the sun is 6.0887 trillion kilometer square, about 11,990 times the earth. Its volume exceeds that of earth by 1.3 million.
The warmth from the sun achieves the earth through radiation. This vitality is known as sunlight based vitality. Note that the planet ingests just a little parcel of this vitality, the rest is reflected back to space. The consumed warmth is in charge of life on earth. It is additionally the wellspring of the world's atmosphere, wind patterns and water cycle.
Plants make their own food through photosynthesis, a process that is dependent on solar energy. Take note that all living organisms get their food directly or indirectly from plants. In addition, the sun is the cause of energy available in fossils. Examples of such energy sources are petroleum and coal.
Providing unlimited light and heat, the sun is the main source of energy to the earth. Extra applications of solar energy include lighting, generating electricity and in enhancing growth of plants in green houses. Considering all these factors, it is true to say that there can be no life on earth without the sun.
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