Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. The table shows the lifetime...
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http://en.wikipedia.org/wiki/Stellar_evolution
(from the article `astronomy`) The range of physically allowable masses for stars is very narrow. If the star`s mass is too small, the central temperature will be too low to ... ...gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star. When such a star has exhausted ... Ther...
Found on
http://www.britannica.com/eb/a-z/s/159
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