Olympus Mons, a shield volcano on Mars, is the largest volcano in the solar system, measuring approximately 370 miles in diameter and 26 kilometers in height. The formation of Olympus Mons and three ...

Federal scientists are pushing back against viral claims that “mega eruptions” could strike within days, even as they quietly ...

A massive volcano in southeastern Iran, Mount Taftan, is showing its first signs of movement after 700,000 years of dormancy.