Olympus Mons: Largest Mountain in our Solar System (Fact of the Day)

Olympus Mons in Mars
Olympus Mons is the largest mountain known in our Solar system. It is a large volcanic mountain which is about 27km above the surface of Mars. This is about three times the size of Mount Everest. It is also 624km wide, which is about the size of the state of Arizona. It is a shield volcano (volcano which is almost entirely built of fluid lava flows), similar to the volcanoes in the Hawaiian Islands.

The main reason for it being large, could be the lower surface gravity in Mars accompanied by the higher eruption rates. This could be why there are many volcanoes in Mars which are more than 10 times the size of the volcanoes in Earth. Another reason could be the fact that the crust doesn't move in Mars which is different to Earth where the plates move. This means that the lava piles up to form a huge volcano whereas in Earth the lava will be used to make new volcanoes rather than making the same volcano bigger as the plates move.


  1. Oh my god double rainbow all the way.

  2. olympus mons is also the largest volcano in the solar system. it was named after the latin word for mount olympus.

  3. Retards of course its from the Greek word Olympus dug



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