Volcanic eruptive activity may take many forms, from gently erupting basaltic fissures in Hawaii to intense explosive eruptions like those of Mount St. Helens. Volcano observatory scientists are ...

BERKELEY — Eta Carinae, the galaxy’s biggest, brightest and perhaps most studied star after the sun, has been keeping a secret: Its giant outbursts appear to be driven by an entirely new type of ...

1959 Kīlauea Iki eruption: It happened in the crater just north of the volcano’s caldera, lasting only about a month with 17 ...

Volcanic eruptions remain one of Earth’s most dramatic natural phenomena, characterised by explosive discharges of ash, gas and pyroclastic materials that play a critical role in shaping the ...

In a dramatic, multi-staged eruption, the sun has revealed new clues that could help scientists solve the long-standing mystery of what causes the sun's powerful and unpredictable eruptions.

Is there anything more spectacular than a towering lava fountain? Think about what it is: glowing red molten rock being shot into the sky, potentially hundreds or thousands of feet. As ubiquitous and ...

When you think of a Yellowstone eruption, you probably picture a massive, caldera-forming explosion. But new research is shifting that focus, revealing that the supervolcano's most recent known ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Since Kilauea's hawt eruption action moved ...

Volcanic ash samples collected from a variety of recent eruptions were studied, using petrography, chemical analyses, and scanning electron microscopy to characterize each ash type and to relate ash ...