Stars are celestial objects that can make their own light. They are extremely hot and extremely large in size. They are mostly made up of hydrogen gas with a little helium in them. The sun is also a star; the sun’s energy and light play one of the key roles in sustaining all forms of life on earth.
Stars produce light by nuclear fusion reactions that happen inside it. In this process, hydrogen is converted into helium and energy is produced as a byproduct. It is this energy that comes to us as light. The sun being near to us appears large and very bright in the sky. However, all other stars are extremely far away from us.
So, they appear small and faint in the sky. Many of these celestial bodies are hundreds times bigger than our sun in size and much brighter. However, they don’t appear so because they are so far away from the earth.
There are a lot of celestial bodies that are formed in the galaxy. Some of these celestial bodies eventually become stars. There are various conditions that are required for a celestial body to become a star. First of all, it must be formed by dust and gas. Second, it has to reach a certain size before it can be considered a star.
Do remember that stars are massive objects. They may seem so small but this is only because they are light years away from us. Third, the celestial body should have the ability to create its own energy. Stars are known to have their own fuel that may run from a million years to a billion. It would depend on the star’s overall size.
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