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Well, if you take all the planets together, taking into account that Jupiter and Saturn are enormous and consist mostly of hydrogen and helium gasses, then you'd have to say that the planets are made mostly of hydrogen and helium gas.
But if you are allowed to give separate answers for the different planets, you'd say that the four terrestrial planets are made mostly out of silicate (rocky) material with a core of nickel-iron alloy, that Jupiter and Saturn are made mostly of a mixture of hydrogen and helium gasses, and that Urnaus and Neptune are made mostly of hydrogen and helium gases with substantial cores of water ice.
What else can I help you with?
Why are the outer planets less dense?
They are made of less dense materials. While the inner planets are made primarily of rock, the outer planets are made mostly of hydrogen and helium.
What are the four outermost planets mostly made of?
The four outermost planets (Jupiter, Saturn, Uranus, Neptune) are mostly made of hydrogen and helium gas, with smaller amounts of other elements like water, ammonia, and methane. These planets are known as gas giants because of their composition and lack of a solid surface.
Which planets are mostly made from atmosphere?
The four outer gas giants.
Are the inner planets made out of?
Inner planets are made mostly of rock, although the Earth also has quite a substantial metallic core, of nickel and iron.
What are the planets made of gas called?
There are four planets that are made out of gas: Jupiter, Saturn, Urans and Neptune. These planets are called the "gas giants" . The other four planets (Earth, Mercury, Venus and Mars) are mostly made out of rock.
What are Earth and the other planets closest to the sun are made mostly?
Earth and the other planets are mostly made of rock.
Why are the smallest planets the densest?
because they are made of mostly metal and rock while the bigger planets are mostly made of gas
What are the outermost planets mostly made of?
Ices.
Are the inner planets large planets made up of mostly gas?
No, those are the outer planets.
What are the gassy planets made of?
They are made mostly of hydrogen and helium.
What are the giant outer planets made mostly made out of?
Gases
What are the inner planet mostly made of?
The inner planets are mostly made of iron and rock.
What are the giant outer planets mostly made of?
Rocks
What are the gassy planets?
They are made mostly of hydrogen and helium.
Which planets mostly made of atmosphere?
venus and earth.
How are the inner planets different from the outer planets?
The inner planets Mercury, Venus, Earth and Mars are small, heavy and mostly made of rock. The outer planets Jupiter, Saturn, Uranus and Neptune are huge, light and mostly made of gas.
What is a inner planer?
An inner planet is mostly made of iron and has more mass than outer planets, outer planets are mostly made of gasses, makeing them have less mass. The inner planets are the planets between the asteroid belt and the sun
