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equinox
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Introduction References & Edit History Related Topics
Images & Videos
Earth's orbit
What causes the seasons?
positions of the equinoxes sunlight strikes parts of Earth differently seasonal configuration of Earth and Sun
What is the summer solstice?
Quizzes
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space Quiz
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
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
Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
36 Questions from Britannica’s Most Popular Science Quizzes
Read Next
Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?
Encyclopaedia Britannica First Edition: Volume 1, Plate XLIII, Figure 1, Astronomy, Solar System, Equation of Time, Precession of Equinoxes, Earth, orbit, ecliptic, apogee, perigee, line of apsides, mean anomaly, tropical year, Sydereal, Julian
First Day of Fall
Flower. Fruit tree. Cherry. Cherry tree. Cherry blossom. Spring. Close-up of cherry blossoms in bloom.
The Perils of an Early Spring
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?
Discover
Statue of Nostradamus
Nostradamus and His Prophecies
Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson
Vietnam War Timeline
Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics
10 Greatest Baseball Players of All Time
Stylish light blue jeans on wooden background, closeup of inset pocket
Why Do Jeans Have That Tiny Pocket?
Portrait of Marie Antoinette by Jean-Francois Janinet, 1777. Color etching and engraving with gold leaf printed on two sheets, 30x13.5 in.
Did Marie-Antoinette Really Say “Let Them Eat Cake”?
Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)
All 119 References in “We Didn’t Start the Fire,” Explained
World Data Locator Map: Australia
Is Australia an Island?

equinox: Related Content

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Photos and Videos

Earth's orbit
positions of the equinoxes
sunlight strikes parts of Earth differently
seasonal configuration of Earth and Sun
What causes the seasons?
What is the summer solstice?
See All Videos and Images →

Related Topics and References

Topics

Related Quizzes and Features

Quiz
Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
36 Questions from Britannica’s Most Popular Science Quizzes
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
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
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space Quiz
Demystified
Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?