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celestial mechanics
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geocentric system orbital elements orbital elements orienting the ellipse variation of gravitational acceleration uncompensated tangential accelerations unequal forces on two tidal bulges satellite orbits
For Students
celestial mechanics summary
Quizzes
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
Physics and Natural Law
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
Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.
All About Physics Quiz
Related Questions
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Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?
Solar System with the sun and planets amid stars. Illustration Venus Mercury Earth Mars Jupiter Saturn Neptune Uranus space orbit
Understanding Kepler’s Laws of Planetary Motion
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?
Discover
Odissi Indian classical female dancer on white background. (Indian dancer; classical dancer; Indian dance)
6 Classical Dances of India
Parsons Weems' Fable, oil on canvas by Grant Wood, 1939; in the Amon Carter Museum of American Art. Catalog entry: The historian Mason Locke Weems, commonly known by his clerical title, Parson Weems, pulls back a curtain to point at 6-year-old George Washington. Bearing an adult head and holding an axe, George gazes blankly up at his father, Augustine, who questions his son while holding a partially cut cherry tree. All of this takes place in front of a 20th-century brick building, which Wood modeled after his own home in Iowa. The scene illustrates the fable of Washington and the cherry tree, which Weems invented in 1806 for the first president's biography. Wood playfully suggests the artifice of the tale here, presenting the story in the manner of a costumed stage play rather than a real event. Amid the action, two Black figures pick cherries in the background, a reference to Washington' slaveholding past and a reminder of of what often gets left out in historical mythmaking.
Did George Washington Really Say, “I Can’t Tell a Lie”?
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
winter ice melting salt on the ground, pattern as background
Why Does Salt Melt Ice?
Data analysis of the Super Bowl's "winningest" teams, game locations, MVP winners by position, teams with the most game losses. football, sports, infographic
From Sport to Spectacle: The History of the Super Bowl
Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society
The 10 Greatest Basketball Players of All Time
Young man skeet shooting with airborne shell
6 Unusual Olympic Sports

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Photos

geocentric system
orbital elements
orbital elements orienting the ellipse
variation of gravitational acceleration
uncompensated tangential accelerations
unequal forces on two tidal bulges
satellite orbits
See All Images →

Related Topics and References

Topics

Key People

Henri Poincaré, 1909.
Henri Poincaré
French mathematician
Lagrange, Joseph-Louis, comte de l'Empire
Joseph-Louis Lagrange, comte de l’Empire
French mathematician
Siméon-Denis Poisson, detail of a lithograph by François-Séraphin Delpech after a portrait by N. Maurin.
Siméon-Denis Poisson
French mathematician
Félix Tisserand
French astronomer
Dirk Brouwer
American astronomer

Related Quizzes and Features

Quiz
Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.
All About Physics Quiz
Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
Physics and Natural Law
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
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
Demystified
Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?