It's hard to believe this image was taken over Earth.
The U.S. Geological Survey defines a volcano as a vent in Earth's surface, either on land or on the seafloor, from which molten rock called magma, as well as ash and gases, can erupt or ooze. Different types of volcanoes erupt in different ways, with some erupting spectacularly and others, most notably Hawaii's shield volcanoes, steadily oozing lava. There are different types of volcanoes, including stratovolcanoes, shield volcanoes and cinder cones, and different types of lava and other volcanic flows. Volcanoes can be active, dormant or extinct. Most of Earth's volcanoes are located along the Pacific Ring of Fire, where many of Earth's tectonic plates subduct beneath another plate. Currently volcanic eruptions cannot be predicted, though most of the big, active volcanoes are routinely monitored and authorizes warn when they think an eruption is likely. Read below for the latest news on volcano monitoring and research, current volcanic eruptions and to see amazing pictures of volcanoes.
Crater Lake is a caldera lake and is one of the most spectacular natural wonders of North America. Check out these incredible photos of the region.
A volcano on Antarctica's Deception Island nearly wiped out one of the continent's largest and oldest penguin populations ... not once but three times throughout history.
Around the same time that the dinosaurs became extinct on Earth, a volcano on Mars went dormant, NASA researchers have learned.
Mount Etna is Italy's largest active volcano. It is also the volcano with the longest record of continuous eruption.
Mount Etna, the largest active volcano in Italy, erupted yesterday for the first time this year, spewing rivers of bright orange lava into the night skies over Sicily, according to news reports.
The Earth's mantle retains traces of primeval materials that are older than the moon, which formed a scant 100 million years after the solar system's coalescence.