Olympus Mons's Size Significantly Reduces Mars's Upper Atmosphere
The tallest mountain in the Solar System is Olympus Mons on Mars, standing at 40 km high, surpassing Earth's Mount Everest, with other notable features including the equatorial ridge on Saturn's moon Iapetus. Olympus Mons is a massive shield volcano that may still be active and is a potential site for extraterrestrial life due to its water ice and heat sources.