A star is born Birth of a star.
Most stars have similar life cycles.
They are born inside of nebulas, giant clouds of gas and dust. A globula is a small, dense ball of dust and gas, which pulls particles from a nebula toward its surface. After millions of years, the particles in the globula s core pack in close together and their temperatures increase until nuclear explosions occur. Tremendous amounts of energy are released and a new star begins to shine. Eventually a star will begin to lose its energy and start to contract.