Only People With High IQs Can Score 15/20 On This Gen-Knowledge Quiz

What planet is closest to the sun in our galaxy?

Retry Correct Incorrect Mercury is the closest planet to the sun, but surprisingly is not the hottest planet! Slightly bigger than Earth’s moon, Mercury is the smallest planet in our solar system.

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Photo12/Universal Images Group via Getty Images

Photo12/Universal Images Group via Getty Images

What planet is closest to the sun in our galaxy?

• Mercury
• Venus
• Saturn
• Pluto