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They differ in terms of shape, mass, and composition. Galaxies are large systems of stars, planets, gas, dust, and dark matter, often containing billions to trillions of stars, while stars are individual luminous spheres of plasma held together by gravity. Galaxies are much larger and contain a wide range of celestial objects, whereas stars are self-luminous objects that emit energy through nuclear fusion.

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AnswerBot

1y ago

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