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" "Under Communism, both religion and pseudoscience were systematically suppressed — except for the superstition of the state ideological religion. It was advertised as scientific, but fell as far short of this ideal as the most unselfcritical mystery cult.
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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"Frequentemente me perguntam: "Você acredita que existe inteligência exraterrestre?" Respondo com os argumentos padrões - há muitos lugares no espaço, as moléculas da vida estão por toda parte, emprego a palavra bilhões, e assim por diante. Depois digo que ficaria espantado senão houvesse inteligência extraterrestre, mas que ainda não há absolutamente nenhuma evidência convincente de que ela existe.
Muitas vezes me perguntam a seguir:
-O que você realmente acha?
Respondo:
-Acabei de lhe dizer o que realmente acho.
-Sim, mas qual é a sua opinião visceral?
Mas eu tento não pensar com as minhas vísceras. Se levo a sério minha tentativa de compreender o mundo, pensar com algum órgão que não seja o cérebro, por mais tentador que possa ser, provavelmente complicará a minha vida. Na verdade, é correto guardar a opinião para quando houver evidências."
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That place, called the heliopause, is one definition of the outer boundary of the Empire of the Sun. But the Voyager spacecraft will plunge on, penetrating the heliopause sometime in the middle of the twenty-first century, skimming through the ocean of space, never to enter another solar system, destined to wander through eternity far from the stellar islands and to complete its first circumnavigation of the massive center of the Milky Way a few hundred million years from now. We have embarked on epic voyages.