Not everyone agrees, but it is generally thought that stars originate from nebulae (clouds of dust and gas). Almost inevitably, a nebula will "collapse" into a single mass because of the force of its particles' gravity.
Detail from the Orion Nebula
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Not everyone agrees, but it is generally thought that stars originate from nebulae (clouds of dust and gas). Almost inevitably, a nebula will "collapse" into a single mass because of the force of its particles' gravity.
Detail from the Orion Nebula
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