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" "We are spending a million million dollars every year, worldwide, on armaments. A million million dollars. Think of what you could do with a million million dollars. A visitor from somewhere else - the legendary intelligent extraterrestrial - dipping down to the Earth and inquiring what we are about and finding such prodigies of human inventiveness and such enormous fractions of our wealth devoted not just to the means of war but to the means of massive global destruction - such a being would surely deduce that our prospects are not very good and perhaps go on to some other, more promising world.
Carl Edward Sagan (9 November 1934 – 20 December 1996) was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. Sagan argued the hypothesis, accepted since, that the high surface temperatures of Venus can be attributed to, and calculated using, the greenhouse effect. He testified to the US Congress in 1985 that the greenhouse effect will change the earth's climate system.
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Cosmos is for many that first encounter with the universe that you thought was foreclosed to you because you couldn’t do the math, or you live in a place where there are no scientists to invite you in. Carl wanted everyone to come on this voyage; to experience the power of the scientific perspective and the wonders it reveals. His secret was to recapture the person he was before he understood the concept and then retrace his own thought steps toward comprehension. It worked. He inspired legions to study, teach, and do science.
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