Deep in the cosmos, about a billion light-years away, a monster with a gargantuan appetite has woken up. For roughly 100 ...

Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help ...

A long quiet volcano in Ethiopia has roared back to life, blasting ash roughly 9 miles into the sky and catching both nearby ...

A supermassive black hole is reawakening inside a distant galaxy cluster—and after almost 100 million years of slumber, ...

One of the most vivid portraits of "reborn" black hole activity – likened to the eruption of a "cosmic volcano" spreading ...

Kīlauea seems to be in a shaking kind of mood after Episode 40 of its ongoing episodic lava-fountaining eruption at the ...

One of the most vivid portraits of “reborn” black hole activity – likened to the eruption of a “cosmic volcano” spreading almost one million light-years across space – has been captured in a gigantic ...

It's been nearly four years since a massive volcanic explosion rocked the Pacific nation of Tonga. The eruption created a ...

Hawaii 's Kilauea volcano erupted again this week, sending lava more than 800 feet into the air during a roughly 10-hour ...

Guides who take tourists to enjoy the striking views of Sicily's Mount Etna are up in arms over tougher restrictions imposed ...

Guides who take tourists to enjoy the striking views of Sicily’s Mount Etna are up in arms over tougher restrictions imposed ...