I do not imagine that many people in the fifteenth century … - Carl Sagan

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I do not imagine that many people in the fifteenth century ever wondered if they were living in the Italian Renaissance.

Carl Sagan

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About Carl Sagan

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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Also Known As

Native Name: Carl Edward Sagan

Alternative Names: Sagan • Carl E. Sagan • Carl E Sagan • C. E. Sagan • C.E. Sagan • C E Sagan • C. Sagan • C Sagan • Sagan C • Sagan C. • Sagan C. E. • Sagan CE

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Additional quotes by Carl Sagan

Except for hydrogen, all the atoms that make each of us up — the iron in our blood, the calcium in our bones, the carbon in our brains — were manufactured in red giant stars thousands of light-years away in space and billions of years ago in time. We are, as I like to say, starstuff.

Vigorous criticism is more constructive in science than in some other areas of human endeavor because in science there are adequate standards of validity that can be agreed upon by competent practitioners the world over. The objective of such criticism is not to suppress but rather to encourage the advance of new ideas: those that survive a firm skeptical scrutiny have a fighting chance of being right, or at least useful.

The obvious is sometimes false; the unexpected is sometimes true.

I do not imagine that many people in the fifteenth century ever wondered if they were living in the Italian Renaissance. - Carl Sagan

About Carl Sagan

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