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Carl Sagan
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Introduction Quotes References & Edit History Quick Facts & Related Topics
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For Students
Carl Sagan summary
Quizzes
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space Quiz
USA 2006 - 78th Annual Academy Awards. Closeup of giant Oscar statue at the entrance of the Kodak Theatre in Los Angeles, California. Hompepage blog 2009, arts and entertainment, film movie hollywood
Pop Culture Quiz
Michael Faraday (L) English physicist and chemist (electromagnetism) and John Frederic Daniell (R) British chemist and meteorologist who invented the Daniell cell.
Faces of Science
Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy
Related Questions
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Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)
How Fast Is the Universe Expanding?
Planet Earth and lunar moon from space
Where Did the Moon Come From?
solar eclipse, sun, moon, astronomy, space
How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?
William Shatner and Leonard Nimroy as Captain James T. Kirk and Spock in the tv show Star Trek 1966-1969
50th Anniversary of Star Trek
Arrangement of the phases of the moon in total eclipse with Blood Moon
9 Celestial Omens
Discover
Snowshoe hare (Lepus americanus) with its Summer coat on the left side and its winter coat on the right.
7 Animals That Turn White in Winter
Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.
5 Remarkably Close U.S. Presidential Elections
The Cheshire Cat is a fictional cat from Lewis Carroll's Alice's Adventures in Wonderland. (Alice in Wonderland)
11 Banned Books Through Time
United States electoral college map showing number of electoral votes by state.
How Does the Electoral College Work?
cloning. First cloned cat. First cloned companion animal. CC (copy cat) female domestic shorthair cat (b. Dec. 22, 2001) photo Jan. 18, 2002. Cloned at Texas A&M Univ. College of Vet. Med. & Biomedical Sciences. Reproductive cloning genetics DNA cc cat
CC, The First Cloned Cat
Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society
12 Novels Considered the “Greatest Book Ever Written”
Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,
Which Religion Is the Oldest?

Carl Sagan: Quotes

  • Understanding
    The brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.Carl Sagan: Broca's Brain