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Galileo
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Galileo Galileo's telescopes Galileo's illustrations of the Moon Galileo Galilei: Copernican system
Aristotle's theory of the solar system explained
Galileo Galilei: sunspots German mathematician Christoph Scheiner.
Why was Galileo persecuted for his discoveries?
frontispiece to Galileo's Dialogue Concerning the Two Chief World Systems, Ptolemaic & Copernican Astronomers Monument
For Students
Galileo
Galileo (Galilei) summary
Galileo
Galileo Timeline
Galileo
Galileo’s Achievements
Quizzes
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
Science 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
Equations written on blackboard
Numbers and Mathematics
ball bearing. Disassembled ball bearing. rotational friction Automobile Industry, Engineering, Industry, Machine Part, Metal Industry, Sphere, Steel, Wheel
Inventors and Inventions
Related Questions
Read Next
Planet Jupiter with its moon Io at left, photographed by the Cassini orbiter during the Cassini-Huygens mission, 2000. spacecraft
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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?
Infinite space background with silhouette of telescope. This image elements furnished by NASA.
Telescopes: Seeing Stars
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?
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Galileo: Media

Italian 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...
Courtesy of the Joseph Regenstein Library, The University of Chicago
Astronomers Monument
Astronomers Monument, concrete sculpture featuring six astronomers by Arnold...
© Jorg Hackemann/Shutterstock.com
Galileo
Galileo, oil painting by J. Sustermans, c. 1637; in the Uffizi, Florence.
Alinari/Art Resource, New York
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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