Life on Earth may exist thanks to an incredible stroke of luck — a chemical sweet spot that most planets miss during their formation but ours managed to hit.

As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

An experiment to quantify the amount of the universe’s lightest element in Earth’s core suggests that the planet’s water has ...

Earth's core contains nine to 45 times more hydrogen than the planet's oceans do, according to a new study that could settle a debate about when and how hydrogen was delivered to Earth.

Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure ...

Parts of ancient Earth may have formed continents and recycled crust through subduction far earlier than previously thought.

New method reveals chemical signs of early microbial life in ancient Earth rocks, showing photosynthesis evolved much earlier than believed.

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.

V1298 Tau links swollen young worlds to the compact planets that astronomers keep finding, and its timing signals made that ...