1. The sun is the biggest and brightest star.
2. The sun is the main source of energy.
3. Without sun there would be no life.
4. The sun gives us heat and light.
5. Sun contains gases of hydrogen and it is very very hot.

Translate it into hindi
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Sun is the nearest star of our solar system. it is huge ball made up of gases like helium and hydrogen. it is located in the centre of our solar system and all the planets revolve around it. it provide energy to all the life forms on earth and basic requirement for survival. it is very essential part of our life.
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oh i didnt rd that it was to b in hindi! sorry.