Stars

Definition of Stars as it relates to Science, Astronomy, Nebula, Quasars

Stars, as part of the hierarchy Science/Astronomy/Nebula/Quasars, represent a fundamental aspect of the universe. They are massive, luminous spheres of plasma held together by gravity, and they emit energy in the form of light and heat due to nuclear fusion at their cores. Stars have a life cycle that includes formation from nebulae, evolution through various stages, and eventual death as white dwarfs, neutron stars, or black holes. Quasars, which are extremely luminous and distant objects powered by supermassive black holes, can be found in the centers of some galaxies and may be related to the formation and evolution of stars. Understanding stars is crucial for gaining insights into the universe's history, composition, and future.

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