Carl Sagan

"A galaxy is composed of gas and dust and stars - billions upon billions of stars. Every star may be a sun to someone."

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Source: Cosmos ch. 1 (1980). Sagan denied using the phrase billions and billions, as caricatured by comedian Johnny Carson, but the above quote approaches that phrase, and Sagan was extremely fond in his writing of the word billion or billions.

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Carl Sagan

Carl Sagan

Astronomer, Astrophysicist

Carl Sagan was an influential astronomer and science communicator, known for his work 'Cosmos' and advocacy for scientific literacy.

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