Planetary scientists have long debated where the material that formed Earth comes from. Despite its location in the inner ...

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

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

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

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

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

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

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 ...

Billions of years ago, in the giant disk of dust, gas, and rocky material that orbited our young sun, larger and larger bodies coalesced to eventually give rise to the planets, moons, and asteroids we ...