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What are nebulas, and how are they affected by gravity?.
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What are nebulas, and how are they affected by gravity?.

User Vijay Shegokar
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Nebulae are made of dust and gases-mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger.
User KLaz
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