Magma is the molten material beneath the Earth's crust. It usually collects in a magma chamber beneath a volcano, and can then be injected into cracks in rocks or issue out of volcanoes in eruptions.

If the theory is proven correct, the consequences could be enormous, spelling a much more risky, explosive future.

Volcanos are releasing ash and smoke into the atmosphere on three continents. That might be making you think back to your elementary school science class when you probably studied volcanoes and lava.

When astronomers first cataloged some of the closest orbiting rocky exoplanets, they wrote them off as bare, airless cinders, ...

A lava river fed by the erupting Kilauea volcano in Hawaii is moving faster. A river of lava fed by the erupting Kilauea volcano on the Big Island of Hawaii and its many fissures was moving faster and ...

Hawaii’s Kilauea volcano resumed erupting Friday by shooting an arc of lava 100 feet (30 meters) into the air and across a section of its summit crater floor. It was Kilauea’s 31st display of molten ...

On the slopes of an Indonesian volcano, rivers of light appear to pour out of the dark, glowing an electric blue that looks ...

This image provided by the U.S. Geological Survey shows evening views of lava fountaining from Haleumaumau Crater at the summit of Kilauea volcano inside Hawaii Volcanoes National Park, Hawaii., Feb.

CHICAGO — An entire ocean of liquid magma, or maybe a hot heart of solid metal, may lurk in Io’s underworld. The surface of Jupiter’s innermost moon is covered in scorching lava lakes and gored by ...

A Carnegie-led team of astronomers detected the strongest evidence yet of an atmosphere around a rocky planet beyond our ...

HONOLULU — Hawaii's Kilauea volcano resumed erupting Friday by shooting an arc of lava 100 feet (30 meters) into the air and across a section of its summit crater floor. It was Kilauea's 31st display ...