Search results
- Dictionaryplanet/ˈplanɪt/
noun
- 1. a celestial body moving in an elliptical orbit round a star.
Powered by Oxford Dictionaries
One idea is to simply define a planet as a natural object in space that is massive enough for gravity to make it approximately spherical. But some scientists object that this simple definition does not take into account what degree of measurable roundness is needed for an object to be considered round.
The eight planets of the Solar System with size to scale (up to down, left to right): Saturn, Jupiter, Uranus, Neptune (outer planets), Earth, Venus, Mars, and Mercury (inner planets) A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one ...
Jun 13, 2024 · What Is a Planet? | NASA Space Place – NASA Science for Kids. The Short Answer: A planet must do three things: it must orbit a star, it must be big enough to have enough gravity to force a spherical shape, and it must be big enough that its gravity cleared away any objects of a similar size near its orbit.
PLANET definition: 1. an extremely large, round mass of rock and metal, such as Earth, or of gas, such as Jupiter…. Learn more.
Some astronomers argued that location (context) is important, especially in understanding the formation and evolution of the solar system. One idea is to simply define a planet as a natural object in space that is massive enough for gravity to make it approximately spherical.
Jun 28, 2012 · The meaning of PLANET is any of the large bodies that revolve around the sun in the solar system. How to use planet in a sentence. Did you know?
3 days ago · planet, (from Greek planētes, “wanderers”), 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.
Jun 29, 2015 · What is a planet? The question has been pondered by many since the early Greeks came up with the word "planets." Since then the number of "planets" in our solar system has fluctuated, sometimes numbering as high as 15, before it was determined that some were actually asteroids.
A planet is defined as a celestial body that (a) is in orbit around a star, (b) has enough mass for its gravity to create a round shape, and (c) has cleared its neighborhood of smaller objects.
Specifically, a planet is required to be massive enough to have cleared away similarly sized objects in the neighborhood of its orbit. Using this new definition, there are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
