One of the big surprises: Despite the moon's cooled crust, the data shows Io maintains liquid hot lava just below the ground.

Ash may lack the visual impact of flowing lava, but as a geologist who studies disasters, I'm aware that ash travels farther, lasts longer and leaves deep scars. Volcanic ash forms when viscous ...

In 2010, the eruption of Eyjafjallajökull volcano in Iceland caused the largest air traffic shutdown since World War Two.

A MASSIVE Alaskan volcano is on the brink of erupting — and terrified experts warn it could happen within weeks. Mount Spurr, the 11,000-foot behemoth sitting just 80 miles west of Anchorage, has ...

NASA’s Juno mission has unveiled new insights into Jupiter’s fierce winds, cyclones, and volcanic activity on its moon, Io.