Question

Q5. What are inner planets and outer planets made of ?​

Answer 1

The inner planets (Mercury, Venus, Earth, and Mars) are relatively small rocky planets made up mostly of silicate minerals and iron and nickel metal.

The four outer planets—Jupiter, Saturn, Uranus, and Neptune—are all gas giants made primarily of hydrogen and helium.

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Answer 2

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The inner planets, or terrestrial planets, are the four planets closest to the Sun: Mercury, Venus, Earth, and Mars. Figure below shows the relative sizes of these four inner planets. This composite shows the relative sizes of the four inner planets.

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