Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current theories ...

The Earth has a layered structure made up of the core, the mantle and the crust. Different elements are present in different parts of the Earth’s structure. The crust is made from enormous ...

Composition of the atmosphere The air ... with around 20% oxygen and other trace gases. The Earth has a layered structure made up of the crust, the mantle, the outer core and the inner core.

Other observational techniques including seismology and in-situ sampling have revealed the structure and composition of planetary interiors (primarily for Earth and its Moon, but soon for Mars as well ...

Researchers have made a new discovery that changes our understanding of Earth's early geological history, challenging beliefs about how our continents formed and when plate tectonics began.