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Galileo
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Galileo Galileo's telescopes Six sepia-toned sketches by Galileo show different phases of the Moon, each with shaded and illuminated areas, on aged paper with handwritten numbers and notes. Engraving by Galileo Galilei showing the Copernican heliocentric system with the Sun at the center, planets in concentric orbits, and Jupiter with four orbiting moons.
Aristotle's theory of the solar system explained
Engraving from Galileo Galilei's 1613 work showing a circular diagram of the sun with labeled sunspots scattered across its surface. Engraving of Father Christoph Scheiner observing sunspots by projecting the sun's image through a refracting telescope onto a screen, with another man seated at a table.
Why was Galileo persecuted for his discoveries?
frontispiece to Galileo's Dialogue Concerning the Two Chief World Systems, Ptolemaic & Copernican Tall white stone obelisk of the Astronomers Monument at Griffith Observatory in Los Angeles, with sculpted figures of astronomers around its base and a blue sky above.
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Galileo
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View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space Quiz
Model of a molecule. Atom, Biology, Molecular Structure, Science, Science and Technology. Homepage 2010 arts and entertainment, history and society
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Michael Faraday (L) English physicist and chemist (electromagnetism) and John Frederic Daniell (R) British chemist and meteorologist who invented the Daniell cell.
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Equations written on blackboard
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Galileo: Media

Italian natural philosopher, astronomer, and mathematician
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Videos

Aristotle's theory of the solar system explained
Aristotle's theory of the solar system.
Video: Encyclopædia Britannica, Inc.
Why was Galileo persecuted for his discoveries?
Learn more about the life and career of Galileo.
Video: Encyclopaedia Britannica, Inc.
How the barometer was invented
An overview of atmospheric pressure and the development of the barometer.
Video: Encyclopædia Britannica, Inc.

Images

Galileo
Galileo, oil painting by Justus Sustermans, c. 1637, in the Uffizi Gallery, Florence.
SCALA/Art Resource, New York
Galileo's telescopes
Two of Galileo's first telescopes; in the Museo Galileo, Florence.
Scala/Art Resource, New York
Galileo's illustrations of the Moon
Galileo's sepia wash studies of the Moon, 1609; in the Biblioteca Nazionale, Florence.
© Everett-Art/Shutterstock.com
Galileo Galilei: Copernican system
Illustration of the Copernican system of the universe from Galileo's Dialogo...
© Photos.com/Getty Images
Galileo Galilei: sunspots
Illustration from Galileo's Istoria e dimostrazioni intorno alle macchie solari...
© Photos.com/Getty Images
German mathematician Christoph Scheiner.
Christoph Scheiner observing sunspots, c. 1620.
© Photos.com/Getty Images
frontispiece to Galileo's Dialogue Concerning the Two Chief World Systems, Ptolemaic & Copernican
Frontispiece to Galileo's Dialogue Concerning the Two Chief World Systems, Ptolemaic...
Library of Congress, Washington, D.C (12018406)
Astronomers Monument
Astronomers Monument, concrete sculpture featuring six astronomers by Arnold...
© Jorg Hackemann/Shutterstock.com
Galileo
Galileo.
The Metropolitan Museum of Art, New York; The Jefferson R. Burdick Collection, gift of Jefferson R. Burdick (accession no. 63.350.202.25.19); www.metmuseum.org
Galileo
Justus Sustermans, portrait of Galileo, date unknown, oil on canvas.
In a private collection
Galileo
Galileo, oil on canvas by Justus Sustermans, c. 1637; in the Uffizi Gallery, Florence.
SCALA/Art Resource, New York
Galileo
Galileo observes a swaying chandelier in the Pisa cathedral.
© Photos.com/Getty Images
Galileo
A 19th-century illustration depicts Galileo demonstrating his telescope for the senators...
© Photos.com/Thinkstock
Galileo
Galileo, shown here demonstrating his version of the telescope to the Venetian Senate...
Alfredo Dagli Orti/Shutterstock.com
Galileo
In 1613 Galileo published a discussion on sunspots. He supported his position with...
© Photos.com/Getty Images
Galileo's trial
Galileo is tried before the Roman Catholic Inquisition in Rome, Italy, in 1633. Galileo...
© Everett Historical/Shutterstock.com
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