Question

why the sun is bright

Answer 1

Bcoz it produces light by nuclear fusion in core where two hydrogen atoms combined to form helium and lots of energy which is known as photons


hope it helps you

Answer 2

Answer:

The Sun glows because it is a very big ball of gas, and a process called nuclear fusion is taking place in its core. Nuclear fusion occurs when one proton smashes into another proton so hard that they stick together .and release some energy as well.