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Why are the inner and outer planets so different?
Summary. The four inner planets have slower orbits, slower spin, no rings, and they are made of rock and metal. The four outer planets have faster orbits and spins, a composition of gases and liquids, numerous moons, and rings. The outer planets are made of hydrogen and helium, so they are called gas giants.
What are the inner planets and the outer planets?
Mercury, Venus, Earth, and Mars are the planets closest to the Sun. They are called the inner planets. The inner planets are made up mostly of rock. The outer planets are Jupiter, Saturn, Uranus, and Neptune.
What are the inner planets made of?
Earth and the other three inner planets of our solar system (Mercury, Venus and Mars) are made of rock, containing common minerals like feldspars and metals like magnesium and aluminum. So is Pluto. The other planets are not solid. Jupiter, for instance, is made up mostly of trapped helium, hydrogen, and water.
How are the outer planets different from each other?
Compared with the inner planets, they have the most numbers of moons, which is probably due to their larger size. … How are the outer planets different from each other? The Outer Planets are all different sizes and are made up of different combinations of gases and water. For example, Uranus rotates on its side .