This is an interesting question. The Sun is
mainly composed of an enormous amount of Hydrogen,
which makes the Sun very massive. There is an
inward pull force in the Sun which attracts all
its matter, creating high pressures and
temperatures inside it. This fact creates
reactions called “nuclear fusion”. Nuclear fusion
is a nuclear reaction in which two or more atomic
nuclei collide at very high speed and join to form
a new type of atomic nucleus.
So, these are reasons why the Sun is hot, but
there is also another reason: the Sun is an
excellent thermal insulator. This means that
the core of the Sun is very much insulated because
of the huge distance that the heat has to travel
to reach the Sun’s surface, allowing a tremendous
building up of temperature!
is the sun hot
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