Who is Carl Sagan

Carl Edward Sagan (; SAY-gən; November 9, 1934 – December 20, 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.Initially an assistant professor at Ha...
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Sunshineandhap: missouri has just defunded libraries. great libraries are the repositories of great knowledge and have been revered for over 2,400 years. carl sagan said the burning & destruction of the great library is a warning to us to never let it happen again.
Yuyuncres: "somewhere, something incredible is waiting to be known.” —carl sagan
Crew1dina: "somewhere, something incredible is waiting to be known.” —carl sagan
Cloetemegs07: "somewhere, something incredible is waiting to be known.” —carl sagan
Irmayana1505: "somewhere, something incredible is waiting to be known.” —carl sagan
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Felicia Dorothea Hemans Poem
Night-Scene In Genoa
 by Felicia Dorothea Hemans

In Genoa, when the sunset gave
Its last warm purple to the wave,
No sound of war, no voice of fear,
Was heard, announcing danger near:
Though deadliest foes were there, whose hate
But slumber'd till its hour of fate,
Yet calmly, at the twilight's close,
Sunk the wide city to repose.

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