Many Adults Can’t Pass This Elementary School-Level Quiz, Can You?!

What is the smallest planet in our solar system?

Retry Correct Incorrect Before scientists decided that Pluto was no longer a planet, the correct answer would have been Pluto. But nowadays the correct answer is Mercury! It is also the closest planet to the sun.

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SSPL/Getty Images

SSPL/Getty Images

What is the smallest planet in our solar system?

• Saturn
• Earth
• Mars
• Mercury