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What does the star-versus-planet distinction ultimately come down to?

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1. What does the star-versus-planet distinction ultimately come down to?

Nuclear fusion — a star has enough mass for gravity to compress its core until fusion begins, generating its own light, while a planet never reaches this threshold

Planets always generate more light than stars through their own fusion

Stars and planets are identical in every physical respect

A planet’s mass has no bearing on whether it can generate its own light

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What does the star-versus-planet distinction ultimately come down to?

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