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1. Planet | Definition, Characteristics, & Facts | Britannica
Link: https://www.britannica.com/science/planet
Description: WEB5 days ago · 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.
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2. Planet - Wikipedia
Link: https://en.wikipedia.org/wiki/Planet
Description: WEBPlanet. 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 …
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3. Solar system planets, order and formation: A guide | Space
Link: https://www.space.com/16080-solar-system-planets.html
Description: WEBMar 29, 2023 · The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and then the possible...
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4. Planets - NASA Science
Link: https://science.nasa.gov/solar-system/planets/
Description: WEBOur solar system has eight planets, and five dwarf planets - all located in an outer spiral arm of the Milky Way galaxy called the Orion Arm.
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5. planet - National Geographic Society
Link: https://www.nationalgeographic.org/encyclopedia/planet/
Description: WEBFeb 1, 2024 · A planet is a large object that orbits a star.To be a planet, an object must be massive enough for gravity to have squeezed it into a spherical, or round, shape,.It must also be large enough for gravity to have swept up any rocky or icy objects from its path, or orbit, around the star. Scientists believe planets begin to form when a dense cloud of …
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6. What is a Planet? | Planets – NASA Solar System Exploration
Link: https://solarsystem.nasa.gov/planets/in-depth.amp
Description: WEBThe most recent definition of a planet was adopted by the International Astronomical Union in 2006. It says a planet must do three things: It must orbit a star (in our cosmic neighborhood, the Sun). It must be big enough to have enough gravity to force it into a spherical shape.
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7. What is a Planet? - NASA Science
Link: https://science.nasa.gov/solar-system/planets/what-is-a-planet/
Description: WEBA planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.
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8. Solar System Exploration - NASA Science
Link: https://science.nasa.gov/solar-system
Description: WEBThe solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets.
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9. All About the Planets | NASA Space Place – NASA Science for Kids
Link: https://spaceplace.nasa.gov/planets/en/
Description: WEBJul 17, 2019 · Venus. Earth. Mars. Jupiter. Saturn. Uranus. Neptune. article last updated July 17, 2019. If you liked this, you may like: Learn more about the planets in our solar system.
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10. In Depth | Our Solar System – NASA Solar System Exploration
Link: https://solarsystem.nasa.gov/solar-system/our-solar-system/in-depth.amp
Description: WEBOur solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids. Beyond our own solar system, there are more planets than stars in the night sky.
