Do all stars emit their own energy?

Including our own sun, stars are hot balls of glowing plasma held together by their own gravity, which is very intense. Stars are always crushing themselves inward, and the gravitational friction of this causes their interiors to heat up. Though it's a mere 5,800 Kelvin at its surface, a star can be 15 million Kelvin, which is very hot, at its core.

The intense pressure and temperature at a star’s core allows nuclear fusion reactions to happen. This is where, through several stages, atoms of hydrogen are combined into helium atoms. This reaction releases an enormous amount of energy in the form of gamma rays, which are trapped inside the star. They push outward against the gravitational contraction of the star. That’s the reason why stars hold to a certain size, and don’t continue contracting.

The gamma rays jump around in the star looking for ways to get out. They’re absorbed by an atom, and then emitted again. This can happen many times a second, and a single photon can take 100,000 years to get from the core of the star to its surface.

Stars are known to emit light from different wavelengths because they can produce their own energy. They get the energy through the ones that they have stored. The energy that they have will eventually run out. When this happens, the star explodes and dies. There are moments when the planets seem to be brighter than the stars in the sky.

This is because of the ability of the planets to get enough light from the sun. At night, they manage to show the light that they have gathered. Some stars are brighter as compared to others. The sun is obviously a massive star that provides the type of light that the earth basks in.