About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

A recent studypublished in Naturepresents compelling evidence of ancient planetary material buried deep within Earth’s mantle. Researchers have uncovered two massive dense structures beneath Africa ...