The Hayli Gubbi shield volcano, thought to be dormant since almost the last ice age, has erupted, and the volcanic plume is reaching heights at which intercontinental aircraft fly. Hayli Gubbi is ...

Are you ready for an explosive adventure across America’s most dynamic landscapes? If you want to witness ...

Since the 1970s, planetary geologists have known that volcanic features cover large swaths of Mars. Early Mariner 9 images ...

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 ...