Stellar Evolution
Stellar Evolution is the process by which a star changes over the course of time. It is a sequence of events that a star undergoes over its lifetime. The process is driven by the star's internal structure and the amount of fuel it has available to burn. Stellar Evolution can be divided into several stages, including the formation of a protostar, the main sequence stage, the red giant stage, and the white dwarf stage. During each stage, the star undergoes significant changes in its size, temperature, and luminosity. These changes are driven by the fusion of hydrogen into helium in the star's core, which produces energy that is radiated outwards. As the star runs out of fuel, it will eventually exhaust its nuclear fuel and undergo a supernova explosion, leaving behind a neutron star or a black hole.
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