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| the final stage in teh evolution of a massive star; the core collapses to a point that its gravity is so strong that not even light can escape |
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| a late stage in teh life of a low-mass star, the core contracts but its outer layers expand and cool; this is a large, bright, cool star |
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| a large cloud of gas and dust where stars are formed |
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Definition
| very dense core of a collapsed star that can shrink to about 20 km in diameter and contains only neutrons |
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Definition
| late stage in the life cycle of a massive star in which the core heats up and the star expands; a large, very bright star |
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Definition
| a late stage in the life cycle of a low-mass star; formed when its outer layers excape into space leaving behind a hot, dense core; a small, dim, hot star |
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