Life Cycle of Stars

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What is a Neutron Star?

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A neutron star is a stage in the life cycle of a star that is made up of densely packed neutrons. It can sometimes spin and emit beams of radiation, appearing to blink, which is why it is called a pulsar.

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What are White Dwarfs?

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White dwarfs are considered 'dead' stars because they no longer carry out nuclear fusion in their cores. They are the remnants of stars that have exhausted their nuclear fuel.

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What is nuclear fusion?

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Nuclear fusion is the process by which hydrogen atoms combine to form helium, releasing energy in the process. This is the primary reaction that powers stars.

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What is a Black Hole?

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A black hole is a region in space where gravitational collapse is so complete that no energy or matter can escape. It is formed from the remnants of a massive star after a supernova.

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Which of the following is NOT a final stage of a star?

Back

Red Giant is NOT a final stage of a star; it is a phase in the life cycle of a star before it becomes a white dwarf, neutron star, or black hole.

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What is a Supernova?

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A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, often resulting in the formation of a neutron star or black hole.

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What is a Black Dwarf?

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A black dwarf is a theoretical stage of a star that occurs when a white dwarf has cooled down and no longer emits significant heat or light.

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What is a Red Giant?

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A red giant is a phase in the life cycle of a star where it expands and cools after exhausting the hydrogen in its core, leading to a significant increase in size.

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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, main sequence, red giant, supernova, and the final stages of white dwarf, neutron star, or black hole.

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What happens during the main sequence phase of a star?

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During the main sequence phase, a star fuses hydrogen into helium in its core, producing energy that balances the gravitational forces trying to collapse the star.