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Inner Planets vs. Outer Planets

By Brandon Metra. Inner Planets vs. Outer Planets. The Inner Planets. Mercury, Venus , Earth, Mars. Composed mostly of rock. Each has solid surfaces. Planets closest to the sun. Smaller than the outer planets. No rings around these planets. The Outer Planets.

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Inner Planets vs. Outer Planets

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  1. By Brandon Metra Inner Planets vs. Outer Planets

  2. The Inner Planets • Mercury, Venus , Earth, Mars. • Composed mostly of rock. • Each has solid surfaces. • Planets closest to the sun. • Smaller than the outer planets. • No rings around these planets.

  3. The Outer Planets • Jupiter, Saturn, Neptune, Uranus. • Much bigger than the inner planets. • Made mostly of hydrogen and helium. • Known as “gas giants”. • Rings around most of these planets. • Each has its own system of moons.

  4. Comparisons

  5. Pluto, Why its Not a Planet • A planet must be significantly larger than its neighbors. • Pluto’s largest moon is half the size of it. • Does not have enough gravity to dominate things around it. • A planet must be an object that orbits the sun.

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