• Brainly User
The sun is so hot for a number of reasons. It is just a big plasma ball of hydrogen.For one it is a star which is made up of burning gas that is so hot you can feel its energy from millions of miles away.
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the sun is very hot because it is a big  ball of plasma l consisting of  hydrogen. besides this there r many other reason also
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fission is mean reson or not .
yes it is
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