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" "On the scale of worlds — to say nothing of stars or galaxies — humans are inconsequential, a thin film of life on an obscure and solitary lump of rock and metal.
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.
Biography information from Wikiquote
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"For a long time the human instinct to understand was thwarted by facile religious explanations, as in ancient Greece in the time of <a href="https://www.goodreads.com/search/search?q=Homer" rel="nofollow noopener" title="Homer">Homer</a>, where there were gods of the sky and the Earth, the thunderstorm, the oceans and the underworld, fire and time and love and war; where every tree and meadow had its dryad and maenad."
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