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

Add Yahoo as a preferred source to see more of our stories on Google. The Kilauea volcano in Hawaii, which began erupting on December 23, has entered its fourth eruptive episode this week, with lava ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. HONOLULU (AP) — Scientists were bracing for ...

Beneath the Pacific Ocean, about 300 miles off the coast of Oregon, a massive underwater volcano is preparing to erupt. Scientists monitoring Axial Seamount have detected a surge in seismic activity, ...

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 ...

A fresh examination of radar data for Venus obtained by NASA’s Magellan spacecraft in the 1990s indicates the presence of a large underground cavity created by a lava flow, the first subsurface ...

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Deep below the Earth's surface, magma is churning and flowing into the Axial Seamount, an underwater shield volcano about 300 miles off the coast of Oregon. As the volcano grows and tremors increase, ...

This striking, false-color satellite image shows the intense heat coming from a pair of lava lakes that emerged on simultaneously erupting volcanoes in Congo. The neighboring peaks are among Africa's ...