perturbation

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Solar system illustration. (planets; sun)

Why Are Planets Round?

This close-up image of a dust storm on Mars was acquired by the Mars Color Imager instrument on NASA Mars Reconnaissance Orbiter on Nov. 7, 2007. This image is centered on Utopia Planitia

Do Hurricanes Happen on Other Planets?

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?

Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of 289,000 miles

Why Is Pluto No Longer a Planet?

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Union Jack flag of Great Britain, united kingdom

What’s the Difference Between Great Britain and the United Kingdom?

Adolf Hitler (Nazi, nazism, German leader).

9 Things You Might Not Know About Adolf Hitler

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

Demystified - Do Lemmings Really Commit Mass Suicide? illustration

Do Lemmings Really Commit Mass Suicide?

Martin Luther King, Jr.

Why We Celebrate MLK Day

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

Apollo 12 astronaut Charles "Pete" Conrad stands beside the U.S. flag after is was unfurled on the lunar surface during the first extravehicular activity (EVA-1) Nov. 19, 1969. Footprints made by the crew can be seen in the photograph.

How Many People Have Been to the Moon?

perturbation: Related Content

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Topics

periodic perturbation disturbing function secular perturbation phase retrograde motion anomaly conjunction constant of aberration synodic period aphelion opposition sidereal period Kepler’s laws of planetary motion

Key People

Peirce, Benjamin

Benjamin Peirce

American mathematician and astronomer