inner planet

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inner planet

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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conjunction
earth
inferior planet
mare
Mars
Mercury
outer planet

planet
radar astronomy
superior planet
terminator
terrestrial planet
Venus

As these catastrophes occur, the sun will blaze with renewed energy; and it may be that some inner planet had suffered this fate.

The Time Machine by Wells, H.G. View in context

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