Earth formed around 4.54 billion years ago. Knowing how old Earth is can be more difficult to confirm because Earth's age is not only based on the age of rocks, but also the isotopic estimates of what ...

Planetary scientists led by Paolo Sossi have determined that Earth assembled almost entirely from material originating in the ...

For years, planetary scientists have argued that some of the material that built Earth must have drifted in from beyond ...

To understand how the Earth formed, you might want to start with thinking about your breakfast.

The chemical composition of meteorites and asteroids acts as a kind of fingerprint, providing information about the origin of ...

The solid inner core at the center of the Earth, surrounded by the outer core, mantle and crust. Here’s why: While it is well known that a material must be at or below its freezing temperature to be ...

Earth likely formed from inner Solar System material alone, raising fresh questions about the origin of water on our planet.

Blue oceans, green forests, a cozy blanket of oxygen. Our planet is a super comfy home. It’s hard to imagine there was ever a time it didn’t exist. I asked my friend Julie Ménard how Earth formed. She ...

A new analysis of meteorite isotopes challenges long-held ideas about Earth’s origins, suggesting our planet may have formed ...

Mercury, Venus, Earth and Mars – may have formed from two rings around the young sun, rather than a single disc ...