Life Cycle of Stars

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What are heavy elements?

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Heavy elements are a large group of elements, including iron, gold, copper, lead, and magnesium, that conduct heat and electricity well.

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What is a black hole?

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A black hole is a region of space having a gravitational field so intense that no matter or radiation can escape.

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What is a red giant?

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A red giant is a very large star of high luminosity and low surface temperature, thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.

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What is nuclear fusion?

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Nuclear fusion involves the combining of several small nuclei into one large nucleus with the subsequent release of huge amounts of energy.

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What is a protostar?

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A protostar is a contracting mass of gas which represents an early stage in the formation of a star, before nucleosynthesis has begun.

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What is the life cycle of a star?

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The life cycle of a star includes stages such as nebula, protostar, main sequence star, red giant, and supernova or black hole.

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What is a main sequence star?

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A main sequence star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.

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What happens during a supernova?

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A supernova is a powerful explosion that occurs at the end of a star's life cycle, resulting in the ejection of its outer layers.

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What is the significance of nuclear fusion in stars?

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Nuclear fusion is significant in stars as it is the process that powers them, providing the energy needed for light and heat.

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What is the difference between low mass and high mass stars?

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Low mass stars have a longer life cycle and end as white dwarfs, while high mass stars have shorter life cycles and can end as neutron stars or black holes.