Where Does Light Come From?

By Staff WriterLast Updated Mar 28, 2020 7:21:57 AM ET
light-come
David DeHetre/CC-BY 2.0

Light is a form of energy produced by many chemical reactions. The sun and other stars produce huge amounts of heat and light through fusion and are the source of most visible light in the universe. Other reactions that produce light are combustion and chemoluminescence.

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