The record-breaking mission offers an unprecedented opportunity to study the geology of our planet’s largest layer.

South African diamonds have revealed nickel-rich metallic inclusions, offering the first direct evidence of reactions predicted to occur deep in Earth’s mantle. The study shows how oxidized melts ...

Deep inside Earth, far below the crust and oceans, lie vast hidden regions that many geophysicists suspect could have shaped the conditions for life at the surface. I cannot verify specific scientific ...

Scientists may finally be closing in on the origins of two colossal, mysterious structures buried nearly 1,800 miles inside Earth—hidden formations that have puzzled researchers for decades. New ...