Which group are outer planets?

Which group are outer planets?

• A. Mercury, Venus, Earth, Mars
• B. Pluto and other dwarf planets
• C. The Moon, Sun, Earth, Mars
• D. Jupiter, Saturn, Uranus, Neptune

Answer: (D)

Outer planets are the planets that orbit beyond the asteroid belt, far from the Sun. They are much larger and are mostly made of gases and ices, with thick atmospheres and many moons—Jupiter, Saturn, Uranus, and Neptune. This set fits the idea of a distinct group located far from the Sun, unlike the rocky, closer-in planets. Pluto and other dwarf planets belong to a different category, and options that include the Moon, Sun, or inner rocky planets don’t form the same outer-planet group.

Outer planets are the planets that orbit beyond the asteroid belt, far from the Sun. They are much larger and are mostly made of gases and ices, with thick atmospheres and many moons—Jupiter, Saturn, Uranus, and Neptune. This set fits the idea of a distinct group located far from the Sun, unlike the rocky, closer-in planets. Pluto and other dwarf planets belong to a different category, and options that include the Moon, Sun, or inner rocky planets don’t form the same outer-planet group.