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Willem de Sitter
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Introduction References & Edit History Quick Facts & Related Topics
Quizzes
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space 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
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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How Fast Is the Universe Expanding?
solar eclipse, sun, moon, astronomy, space
How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?
Arrangement of the phases of the moon in total eclipse with Blood Moon
9 Celestial Omens
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Is Zero an Even or an Odd Number?
Boat travels down a canal in Amersterdam, The Netherlands
11 Amazing Paintings in the Netherlands
Discover
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6 Cultures That Recognize More than Two Genders
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Martin Luther King, Jr.
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Willem de Sitter: Facts & Related Content

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Facts

Born May 6, 1872 • Sneek • Netherlands
Died November 20, 1934 (aged 62) • Leiden • Netherlands
Subjects Of Study expanding universe
Christiaan Huygens
Christiaan Huygens
Dutch scientist and mathematician
Willebrord Snell
Dutch astronomer and mathematician
Galileo
Galileo
Italian philosopher, astronomer and mathematician
Giordano Bruno
Giordano Bruno
Italian philosopher
Hipparchus
Greek astronomer
Carl Friedrich Gauss
Carl Friedrich Gauss
German mathematician
How did Ptolemy explain retrograde motion?
Ptolemy
Egyptian astronomer, mathematician, and geographer
Edmond Halley
Edmond Halley
British scientist
Edwin Hubble
Edwin Hubble
American astronomer
Sir William Rowan Hamilton
Irish mathematician and astronomer
Arthur Stanley Eddington.
Arthur Eddington
British scientist
Laplace, Pierre-Simon, marquis de
Pierre-Simon, marquis de Laplace
French scientist and mathematician
John Herschel
Sir John Herschel, 1st Baronet
English astronomer
Eudoxus of Cnidus
Greek mathematician and astronomer
Simon Newcomb, c. 1905.
Simon Newcomb
American astronomer and mathematician
Omar Khayyam
Persian poet and astronomer
Ibn al-Haytham
Arab astronomer and mathematician
al-Kāshī
Persian astronomer and mathematician
Regiomontanus
German mathematician
Kidinnu
Babylonian astronomer and mathematician

Related Quizzes and Features

Quiz
Equations written on blackboard
Numbers and Mathematics
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space 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