One day our sun will ends his life and burn out it’s all the fuel which given us the life for millions of species.
The sun is in his middle age and used up half of his hydrogen fuel. Another 4 to 6 billion years from now it will completely finish up of his hydrogen.
Sun’s main energy source comes from atomic fusion converting hydrogen in to helium. After it burn out hydrogen it will start converting helium in in to heavier elements. Finally these heavier elements will stop the nuclear process and stop producing energy.
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