Their findings suggest that the size and frequency of eruptions are closely linked to the time it takes for extremely hot, molten rock known as magma to form in these deep reservoirs beneath the ...

Their findings confirm what was suspected for a long time: the early moon was once entirely engulfed in a molten “magma ocean ...

It shows the underground plumbing system that provides molten and partly molten rock to the magma chamber beneath the Mount Rainier volcano in Washington state. The scale at left is miles depth.