The Inner and Outer Planets

• Small (<13,000 km)

• Rocky (iron core)

• Thin atmospheres

• Slow rotation

• Short years

• Few moons

• Warm

• No Rings

• Large (>50,000 km)

• Gaseous (H, He)

• Thick atmospheres

• Rapid rotation

• Long years

• Many moons

• Cold

• Rings

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