The source of this energy is from the release of gravitational energy as the protostar continues to shrink.
<h3>How are stars born and what is a protostar?</h3>
Nebulae have as possible differences in gas and dust. Some factors, such as turbulence, can cause one of them to contract. This contraction of the set of materials causes the elaboration and execution of this phase of materials, generating what is usually called, in this protostar.
A protostar is formed by the contraction of a giant molecular cloud in the interstellar medium. Stars form within relatively dense concentrations of interstellar gas and dust known as molecular clouds.
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