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" "Que haya cosas que el observador ordinario, o incluso el experto, no entiende, es inevitable.
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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Wahana-wahana ini telah mengajarkan kita tentang keajaiban dunia lain, tentang keunikan dan kerapuhan dunia kita sendiri, tentang awal dan akhir. Keduanya memberikan kita akses ke sebagian besar Tata Surya — baik dari segi jangkauan maupun massa. Keduanya adalah wahana pertama yang menjelajahi tempat yang mungkin akan menjadi kampung halaman keturunan kita di masa depan yang jauh.
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