According to a new theory, there were two giant impacts in a row, separated by about one million years, involving a Mars-sized 'Theia' and proto-Earth. In this image, the proposed hit-and-run ...

That rock has a name: Theia. This requires an explanation. You probably know about the asteroid that smashed into Earth about 66 million years ago at the end of the Cretaceous period, creating the ...

These structures are theorized to contain remnants of Theia's materials ... 100,000 years of radiation': A supernova hit Earth and it may have triggered an evolutionary leap Proof of the AFTERLIFE?: ...

We’ve long been told that the Moon was created when a Mars-sized object named Theia smashed into Earth, hurling material into space which eventually became our beloved celestial companion.