Life Cycle of Stars

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What is the life cycle of a star?

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The life cycle of a star is the series of stages a star goes through from its formation in a nebula to its end state, which can be a white dwarf, neutron star, or black hole.

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What is a nebula?

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A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

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What happens when a star runs out of hydrogen?

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When a star runs out of hydrogen, it begins to fuse heavier elements, causing it to expand and change color, often becoming a red giant.

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What is a red giant?

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A red giant is a late stage in a star's life cycle when it has expanded and cooled after exhausting its hydrogen fuel.

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What are red supergiants?

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Red supergiants are the largest and most massive stars in the universe, known for their immense size and brightness.

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What is a planetary nebula?

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A planetary nebula is the ejected outer shell of gas formed by an aging star, often seen as a glowing shell around a dying star.

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What defines a star?

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A star is defined as a large sphere of gas that generates its own light through nuclear fusion.

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What is a white dwarf?

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A white dwarf is a small, dense star that remains after a low-mass star has exhausted its nuclear fuel and shed its outer layers.

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What is a neutron star?

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A neutron star is an extremely dense star composed mostly of neutrons, formed from the remnants of a supernova explosion.

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What is a black hole?

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A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.