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Jupiter, Saturn, Neptune, and Uranus are known as 'gas giants', meaning that they are made of gas. Pluto is made of rock.

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Q: Are outer planets surfaces rock and hard?
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Why are the surfaces of the inner planets rocky and solid yet the surfaces of the outer planets are gasous with icy centers?

There is no particular reason why the outer planets are gas and the inner planets are rock, but the outer planets have icy cores because they are all far away from the sun.


Is mars made up rock or gas?

inner planets: Mercury, Venus, Earth, and Mars ---> rocky surfaces outer planets: Jupiter, Saturn, Uranus, and Neptune ---> gas planets


Why are inner planets called rock planets?

They have solid surfaces composed of rock.


The surfaces of the inner planets are mostly made of?

Rock.


What is the main difference between inner planets and outer ones?

Inner planets are mostly rock and outer planets are mostly gas.


How do the inner planets differ from the outer?

The outer planets are mostly composed of gases and the inner planets are mostly made of rock, metals.


Why are inner planets of solar system different from outer planets?

Because the inner planets are made of rock but the outer planets are made of gas(except for Pluto).


What is the difference between terrestial planets and outer planets?

terrestrial are planets that are the inner planets since there are made up of rock. but on the other hand. the outer planets are the gas giants. or the outer planets. they are made up of various gasses.


Are all outer planets gas?

yes but all inner planets are rock


Do outer planets have surfaces made of rock?

The outer planets of our solar system, Jupiter, Saturn, Uranus and Neptune, are covered with thick gaseous clouds, and we know little about the surface conditions. It's likely that there are rocky components at some region, but we don't have a good idea of their internal structure.


How are the compositions of the inner planets and outer planets different?

A basic, simplified answer is: The inner planets are mainly rock with iron cores. The outer planets are mostly gas, or liquefied gases.


Separates the inner planets from the outer planets?

An asteroid (Rock) belt.