Mars: Home to Solar System's Largest Volcanoes

When we think of volcanic activity, Earth's erupting mountains usually come to mind. But did you know Mars contains the largest known volcanoes in the solar system? The Red Planet's Olympus Mons stands 16 miles high - nearly three times taller than Mount Everest - with a base spanning Arizona's width. This geological giant hasn't erupted in millions of years, yet its mere existence challenges our understanding of planetary formation.