Neither famous number is as simple as it first sounds. The real question is how much uncertainty each one can realistically ...

A new study offers an explanation for unusual chemical signatures found in some volcanic rocks.

The formation of Earth's continents billions of years ago set the stage for life to thrive. But scientists disagree over how those land masses formed and if it was through geological processes we ...

Scientists did not arrive at Earth’s age from one clue. Several very different measurements keep pointing toward the same ...

Earth and Mars emerged from the same young solar system around 4.5 billion years ago, yet they may have been assembled through fundamentally different processes. A new study published in Nature ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The history of Earth's continents might be different from what we first ...

There are several theories about how the Earth and the Moon were formed, most involving a giant impact. They vary from a model where the impacting object strikes the newly formed Earth a glancing blow ...

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.

Earth and Mars may have formed through very different processes, despite developing as neighbors in the early solar system.

The chemical element sulfur is essential for all lifeforms and is a building block of proteins and amino acids. By studying sulfur-based molecules in space, scientists are working to understand the ...