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Planetesimal Theory Related Category: Astronomy: General (pln´´ts´ml): see solar system. More on Planetesimal Theory ...
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PlanetesimalA small body of rock and/or ice - under 10 kilometers (6 miles) across - formed during the early stages of the solar system. Planetesimals are the building blocks of planets, but many never combined to form large bodies.
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Planetesimal impact First published in 1975, this theory proposes that early in the earth's history, well over 4 billion years ago, the earth was struck by a large body called a planetesimal, about the size of Mars.
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PLANETESIMALA planetesimal is a small object that orbits the Sun. Planetesimals are thought to have formed when the Solar System itself formed, and they were perhaps the building blocks from which the planets were built.
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Planetesimala rocky and/or icy body, a few to several tens of kilometers in size, that was produced in the solar nebula. Precambrian a geological term denoting the time in Earth history prior to 570 million years ago.
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planetesimal -- one of the numerous small, solid bodies that, when gathered together, form a planet.
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planetesimalTerm given to objects in the early solar system that had reached the size of small moons at which point their gravitational fields were strong enough to begin to influence their neighbors. plasma ...
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In regions where the average velocity of the collisions was too high, the shattering of planetesimals tends to dominate over accretion, preventing the formation of planet-sized bodies.
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The Giant Impactor Theory (sometimes called The Ejected Ring Theory): This theory proposes that a planetesimal (or small planet) the size of Mars struck the Earth just after the formation of the solar system, ...
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This suggested the theory that the Moon was produced when a huge planetesimal, perhaps as big as Mars, slammed into the still-forming Earth, ripping material out of its crust.
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What are comets? A comet is a small world which scientists sometimes call a planetesimal. They are made out of dust, and ice. Kind of like a dirty snow ball. Where do they come from? Comets come from two places: The Kuiper Belt, and the Oort Cloud.
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Thomas Chrowder Chamberlain (Sept. 25, 1843 - Nov. 15, 1928) was an American geologist and teacher who proposed the planetesimal hypothesis of the formation of the Solar System.
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An process involving the selective removal of atmospheric species from impacts of planetesimals.
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See also: Planet, Solar, Solar System, Orbit, Sun
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