Magma is a hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites.
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Magma is a hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites.