Why did the first stars need to be so massive to form?

Answer

The lack of heavy elements meant gas clouds needed greater mass to cool efficiently and collapse against thermal pressure

The absence of cooling agents (metals/heavy elements) meant that the initial gas clouds had to collapse under extreme gravity until they reached very large masses (hundreds of solar masses) to ignite fusion.

Why did the first stars need to be so massive to form?

#Videos

What Did The Early Universe Look Like Before Stars Existed?

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