- Planet - Wikipedia
The word planet comes from the Greek πλανήται (planḗtai) 'wanderers' In antiquity, this word referred to the Sun, Moon, and five points of light visible to the naked eye that moved across the background of the stars—namely, Mercury, Venus, Mars, Jupiter, and Saturn
- About the Planets - Science@NASA
A more modern definition can be found in the Merriam-Webster dictionary which defines a planet as "any of the large bodies that revolve around the Sun in the solar system "
- Planet | Definition, Solar System, Characteristics, Facts | Britannica
Planet, broadly, any relatively large natural body that revolves in an orbit around the Sun or around some other star and that is not radiating energy from internal nuclear fusion reactions There are eight planets orbiting the Sun in the solar system
- The Nine Planets of The Solar System | Eight Planets Without Pluto
The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond The smallest and fastest planet, Mercury is the closest planet to the Sun and whips around it every 88 Earth days
- Planets in Order From the Sun | Pictures, Facts, and Planet Info
The ongoing debate over planet classification persists amidst our expanding knowledge of the universe, which includes the discovery of numerous exoplanets, potentially including habitable ones within the Milky Way Galaxy, raising questions about the applicability of our current definitions
- Planet - National Geographic Society
Discovered in 1930, it was long considered the ninth planet in our solar system But in 2006, the International Astronomical Union revised its definition of a planet Under the new definition, a planet must be massive enough that gravitational forces have cleared its solar orbit of other objects
- What is a Planet? - Science@NASA
What is a Planet? The word goes back to the ancient Greek word planēt, and it means "wanderer " A more modern definition can be found in the Merriam-Webster dictionary which defines a planet as "any of the large bodies that revolve around the Sun in the solar system "
- Solar system | Definition, Planets, Diagram, Videos, Facts | Britannica
There are eight planets in the solar system The four inner terrestrial planets are Mercury, Venus, Earth, and Mars, all of which consist mainly of rock The four outer planets are Jupiter, Saturn, Neptune, and Uranus, giant planets that consist mainly of either gases or ice
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