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SESK: Stuff Everyone Should Know · sesk.info/astro-mars-olympus-mons

Which world has the solar system's largest volcano, Olympus Mons?

Mars.

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  1. Mars ✔
  2. Venus
  3. Io

Why: Olympus Mons is a huge shield volcano on Mars. From base to summit it stands more than 40 kilometers tall, far higher than Mount Everest above sea level.

Huh, didn't know that: Its broad base covers an area roughly as large as Arizona.

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Olympus Mons has peak performance on a planetary scale.
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References

Answer: Mars. Olympus Mons is a huge shield volcano on Mars. From base to summit it stands more than 40 kilometers tall, far higher than Mount Everest above sea level.

  1. Mars Facts science.nasa.gov/mars/facts
    Mars is home to the largest volcano in the solar system, Olympus Mons.
    Checked 2026-10-10.

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