Artist's impression of planets forming around a young star. New, very precise measurements of krypton isotopes from deep in the Earth show that water, carbon and other volatile materials were ...

Determining Earth's bulk composition is difficult because so little of the planet is directly accessible. As a result, most estimates derive from a comparison of Earth rocks with the planet's probable ...

Where did the materials that make up the Earth and moon come from—and when did they arrive? Most scientific models contend the Earth formed gradually by addition from an assortment of moon- to ...

Earth's building blocks were more eclectic than once thought, according to a new study suggesting our planet formed from collisions of many different types of meteorites. Our planet is thought to have ...

Earth's building blocks were more eclectic than once thought, according to a new study suggesting our planet formed from collisions of many different types of meteorites. Our planet is thought to have ...

Impacts of numerous Moon- to Mars-sized planetary embryos on the growing Earth released sufficient energy to induce melting and core formation within the Earth 10,11. As metal segregation is thought ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...

New research sheds light on the earliest days of the earth's formation and potentially calls into question some earlier assumptions in planetary science about the early years of rocky planets.

Our planet may have been born wet. When and how Earth got its water is an open question in planetary science. Now an analysis of meteorites from the inner solar system hints that water may have ...