Two continent-sized structures deep inside Earth may contain remnants of Theia, the ancient planet thought to have collided ...

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 ...

The exoplanet is 170 million years old and weighs more than 23 times Earth's mass while being just 2 1/2 times its size.

New computer simulations suggest that planetesimals, the solid precursors of planets like Earth, could have formed only about ...

Researchers have made a new discovery that changes our understanding of Earth's early geological history, challenging beliefs about how our continents formed and when plate tectonics began. A study ...

Astronomers discovered GJ 523b, a rare 'mega-Earth' exoplanet. It's 23 times Earth's weight and 2.5 times its size, yet is ...

A University of Portsmouth study suggests rocky planet building blocks may have formed just 100 million years after the Big Bang from the debris of the first stars.

Crystals hidden in Australia’s oldest rocks have revealed new clues about how Earth and the Moon formed. The study suggests Earth’s continents didn’t begin growing until hundreds of millions of years ...

Immediately after the proto-Earth was formed, the Lambda luminosity started pumping heat into the core. This gave rise to a heated equatorial belt in the outer core and the two antipodal proto-LLVPs.