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planet
Table of Contents
References & Edit History Related Topics
Images & Videos
solar system to scale
Why isn't Pluto a planet?
Learn about the dwarf planets within our solar system
Explore exoplanets and the techniques used to detect them
effects of gravity on the Moon and Earth
Know the ten interesting facts that prove the earth is round
For Students
planet summary
Quizzes
Model of a molecule. Atom, Biology, Molecular Structure, Science, Science and Technology. Homepage 2010 arts and entertainment, history and society
Science Quiz
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
Saturn. Saturn and its rings. Second largest planet of the solar system. Space Art
Planets and the Earth’s Moon
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.
Brightest Star in the Solar System
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
Read Next
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
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?
Background: abstract bubble planets with clouds. astrology, astronomy, atomosphere, big bang, bubbles, fantasy, future, galaxy, universe, stars
9 Ghostly Planets
Solar system illustration. (planets; sun)
Why Are Planets Round?
Discover
Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.
7 Deadliest Weapons in History
Demystified - Do Lemmings Really Commit Mass Suicide? illustration
Do Lemmings Really Commit Mass Suicide?
Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile
6 Lost Civilizations
Skyline of Detroit, Michigan. Photo approximately 2015-2019.
9 Must-See Paintings in Detroit
Close up of a hand placing a ballot in a ballot box. Election vote voter voting
Have Any U.S. Presidents Decided Not to Run For a Second Term?
The assassination of President Abraham Lincoln at Ford's Theatre, Washington, D.C., April 14th, 1865; from a lithograph by Currier and Ives.
9 Infamous Assassins and the World Leaders They Dispatched
United States Electoral College votes by state
How Many Electoral College Votes Does Each U.S. State Have?

planet: References & Edit History

Article History

Type Description Contributor Date
Add new Web site: IOPScience - What is a Planet? Apr 19, 2024
Add new Web site: Space.com - Solar system planets, order and formation: A guide. Mar 07, 2024
Add new Web site: The Planets - Planet Facts – The Planets in Order. Sep 07, 2023
Add new Web site: Physics LibreTexts - Compostion and Structure of Planets. Oct 26, 2022
Add new Web site: The Planetary Society - What is a Planet? Aug 20, 2022
Media added. Nov 14, 2019
Revised title etymology. Oct 01, 2019
Corrected display issue. May 30, 2019
Media added. Dec 07, 2017
Added video. Jan 08, 2016
Add new Web site: Rader's Cosmos4Kids.com - What Makes a Planet? Jun 03, 2014
Add new Web site: National Geographic Kids - Space - What is a Planet? Jun 02, 2014
Add new Web site: Quatr.us - Planet. Mar 10, 2013
Add new Web site: Smithsonian National Air and Space Museum - Exploring the Planets. Feb 05, 2013
Add new Web site: How Stuff Works - Science - Planet. Feb 05, 2013
Add new Web site: National Geographic Society - Encyclopedic Entry - Planet. Feb 05, 2013
Add new Web site: Buzzle.com - Planet. Feb 05, 2013
Add new Web site: NASA Hubblesite - Discovering Planet Beyond. Feb 05, 2013
Add new Web site: Enchanted Learning - Planet. Feb 05, 2013
Add new Web site: Planets of the Solar System. Feb 01, 2013
Add new Web site: Planets of the Solar System. Feb 01, 2013
Add new Web site: Planets of the Solar System. Feb 01, 2013
Add new Web site: Planets of the Solar System. Feb 01, 2013
Add new Web site: How Stuff Works - Science - Planet. Oct 18, 2011
Added new Web site: Royal Museums Greenwich - Eclipse. May 10, 2009
Added new Web site: Sea and Sky - Planets. Apr 16, 2009
Added new Web site: National Geographic - Science and Space - Planets. Apr 16, 2009
Article revised and updated. Jun 12, 2008
Added new Web site: Office of Naval Research - Observing the Sky: Observing the Planets - Introduction. May 19, 2008
Added new Web site: NASA - The Terrestrial Planet Finder. Apr 26, 2007
Added new Web site: Michael E. Brown - California Institute of Technology - Discovery of Eris. Mar 28, 2007
Added new Web site: Michael E. Brown - California Institute of Technology - Discovery of Eris. Mar 28, 2007
Added new Web site: NASA - Solar System Exploration. Dec 14, 2006
Added new Web site: NASA Science - What is a Planet? Nov 07, 2006
Added new Web site: NASA's Planetary Photojournal. Nov 07, 2006
Article revised and updated. Sep 29, 2006
Added new Web site: University of Tennessee - Astronomy 161: The Solar System. Jun 30, 2006
Added new Web site: The Nine Planets - Phobos. Jun 08, 2006
Added new Web site: The Nine Planets - Phobos. Jun 08, 2006
Added new Web site: Sun, Planet and Satellite Data. May 11, 2006
Added new Web site: Sun, Planet and Satellite Data. May 11, 2006
Article revised and updated. Apr 06, 2006
Article revised. Oct 23, 1998
Article added to new online database. Jul 20, 1998
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