A volcano is an opening in the Earth's crust through which molten rock, ash, gases, and steam erupt. When molten rock, called magma, is beneath the surface, it rises and is expelled during an eruption, at which point it is called lava. Volcanic eruptions can create mountains as lava and ash accumulate around the vent with each eruption. Volcano Activity : Active, Dormant, Extinct. Eruption: The process of a volcano releasing material from the Earth's interior. Magma vs. Lava: Magma is molten roc

159K views · 2.6K reactions | Mars Reveals Unusual Rock Formations This mysterious rock formation was found on the surface of Mars, millions of kilometres away from Earth.The shapes look unusual and almost man-made, raising questions about Mars’ ancient past.Scientists say these formations could be created by wind, erosion, and volcanic activity, but the mystery still fascinates everyone. #space #SpaceX #NASA #fblifestyle | Space Journey | Facebook

When a volcano erupts, pyroclastic flows are often the biggest danger to anyone nearby. These fast-flowing currents of rock, ash and hot gas are extremely difficult to study, so researchers created their own. Read the related Nature Geoscience paper here: https://go.nature.com/2Im1bYs | Nature Portfolio