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William Wallace Campbell
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William Wallace Campbell
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
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?
Arrangement of the phases of the moon in total eclipse with Blood Moon
9 Celestial Omens
1 July 2002: The Solar and Heliospheric Observatory (SOHO) satellite reveals a massive solar eruption more than 30 times the Earth's diameter. The eruption formed when a loop of a magnetic field over the surface of the Sun trapped hot gas.
6 Questions About the Sun Answered
Discover
New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
Why Is It Called Black Friday?
Title: Senate Square, St. Petersburg, December 14, 1825: repression of the troop mutiny - watercolor by Carl Ivanovitch Kollman, 1825 depicts Decembrist uprising clashing with cavalry, with spectators watching. (new style December 26, 1825) Europe. Saint
8 of the Largest Empires in History
Thanksgiving Turkey with all the sides
Why Do We Eat Turkey on Thanksgiving?
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”
Santa Claus flying in his sleigh, christmas, reindeer
Was Santa Claus a Real Person?
A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000
14 Tough Questions Answered
Rural Irish landscape, Sligo, Ireland.
Why Is Ireland Two Countries?

William Wallace Campbell: Facts & Related Content

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Facts

Born April 11, 1862 • Ohio
Died June 14, 1938 (aged 76) • San Francisco • California
Subjects Of Study radial velocity • spectroscopic binary star • star

Photos

William Wallace Campbell
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Henry Norris Russell
American astronomer
Williamina Paton Stevens Fleming
American astronomer
Frank Schlesinger
American astronomer
William Herschel
William Herschel
British-German astronomer
Otto Heckmann at the European Southern Observatory's (ESO's) one-metre Schmidt telescope at La Silla, Chile, 1971.
Otto Heckmann
German astronomer
Jacobus Cornelius Kapteyn
Dutch astronomer
Charles Messier
French astronomer
Orion
Johann Bayer
German astronomer
Cecilia Payne-Gaposchkin
British-born American astronomer
Annie Jump Cannon
American astronomer
Otto Struve
American astronomer
Benjamin Apthorp Gould
American astronomer
Pickering, Edward Charles
Edward Charles Pickering
American physicist and astronomer
Vesto Slipher
American astronomer
Barnard's star
Edward Emerson Barnard
American astronomer
Lewis Boss
American astronomer
William W. Coblentz
American scientist
Henry Draper
American astronomer
Adams, Walter
Walter Adams
American astronomer
Hipparchus
Greek astronomer

Related Quizzes and Features

Quiz
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space Quiz
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
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