Extreme heat forged Earth’s continents billions of years ago, creating the stable foundation that made life possible.

Scientists at MIT and elsewhere have discovered extremely rare remnants of "proto Earth," which formed about 4.5 billion years ago, before a colossal collision irreversibly altered the primitive ...

"This is maybe the first direct evidence that we've preserved the proto-Earth materials." Scientists have identified what may be the first direct evidence of material left over from the "proto-Earth," ...

The warmest parts of Mars host a strange, thick layer of ice beneath the surface, and we may have finally figured out how it got there. It might have been shifted from the inside of the planet by ...