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inner planet
(redirected from inner planets)

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inner planet
n.
Any of the four planets, Mercury, Venus, Earth, and Mars, whose orbits are closest to the sun.
inner planet
Any of the four planets Mercury, Venus, Earth, and Mars, whose orbits lie nearest the Sun. The inner planets are of similar size and have high densities compared to the larger gas giants among the outer planets. They are composed mostly of rock and metal and are relatively slow to rotate, with solid surfaces, no rings, and few moons. Also called terrestrial planet. Compare outer planet. See also inferior planet.


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Create a leaflet to help the local community learn the difference between the inner planets and the gas giants.
Meet your new neighbor: it treks around the sun, and it's large than ... by Bryner, Jeanna / Science World
A period of heating and cooling, such as that experienced by the solar system's rocky inner planets, could have caused light material to move toward the asteroid's surface and denser material to sink.
Icy world found inside asteroid by Science News
Like kids in a gravel pile, the inner planets have been flinging rocks out into space for billions of years - and hitting each other with some regularity, according to new computer simulations done at Cornell University.
PLANETS REGULARLY EXCHANGE ROCKS, COMPUTER STUDY FINDS by Daily News (Los Angeles, CA)
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