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SESK: Stuff Everyone Should Know · sesk.info/aero-mercury-smallest-nearest

Which planet is both the smallest and the closest to the Sun?

Mercury.

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  1. Mercury ✔
  2. Mars
  3. Venus

Why: Mercury is the smallest planet in our solar system and the nearest to the Sun. It is only a little bigger than Earth's Moon.

Huh, didn't know that: From Mercury's surface, the Sun would look more than three times as large as it does from Earth.

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Why is Mercury always first in line? It likes to be close to the action.
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References

Answer: Mercury. Mercury is the smallest planet in our solar system and the nearest to the Sun. It is only a little bigger than Earth's Moon.

  1. NASA Science: Mercury Facts science.nasa.gov/mercury/facts
    Mercury is the smallest planet in our solar system and nearest to the Sun.
    Checked 2026-10-10.

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