When people think about their life, to them it seems like an eternity when actually the life span of a human being is seventy-five years. When a person hears of a stars life span is millions of years they can not imagine something living that long. When all they need to do is think of a star as a person, going through the same life cycle, they are born, they live and they die. Some stars die quietly, while others go out with a bang, and some suffer until they die. The suffering death comes from a process of Hawking radiation; this is how a black hole "dies". Before a black hole becomes a black hole it will go through many stages, until finally Hawking Radiation occurs.
The initial phase of stellar evolution is contraction of the protostar from the interstellar gas, which consists of mostly hydrogen, some helium, and traces of heavier elements. In this stage, which typically lasts millions of years, half the gravitational potential energy released by the collapsing protostar is......
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