We all are very much familiar with stars as we see them in sky twinkling all through the night.Also we have read a lot of books like-poem,stories regarding stars.So, a question arises that what is a star?
Let me explain:A star is a heavenly celestial body which is a combination of gases mostly hydrogen and helium.Our nearest star to the earth is the sun.It is luminous in nature so that it has its own light system.
At the core region of a star there is a continuous reaction in between hydrogen and helium gases producing huge energies in the form of photon and reaction is called fusion.A star has very strong gravitational force which holds its gases and other materials within a compact space.
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