Lava is the form of magma, or molten or semi-molten rock, that erupts to the surface, such as via a volcano or through a crust fracture. We all know lava is pretty hot, but exactly how hot is lava?

The newly identified molten layer is located 100 miles (161 kilometers) below the Earth’s surface. This layer is a part of the asthenosphere, which sits beneath the tectonic plates. The ...

The molten layer is located about 100 miles from the surface and is part of the asthenosphere, which sits under the Earth's tectonic plates in the upper mantle.

By analysing the seismic energy that vibrated through the planet after the impact, researchers have discovered a layer of molten rock that envelops Mars’s liquid-metal core. The finding ...