Carl Edward Sagan (1934 – 1996) was an American astronomer, scientist and writer. Sagan was a popular and controversial commentator on extraterrestrial intelligence, nucelar weapons and religion.
His most important scientific contribution was his demonstration that amino and nucleic acids (the building blocks of life) could be produced from basic chemicals by radiation.
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Carl Edward Sagan (1934 – 1996) was an American astronomer, scientist and writer. Sagan was a popular and controversial commentator on extraterrestrial intelligence, nucelar weapons and religion.
His most important scientific contribution was his demonstration that amino and nucleic acids (the building blocks of life) could be produced from basic chemicals by radiation.
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