Add Yahoo as a preferred source to see more of our stories on Google. Scientists widely agree that an ancient planet likely smashed into Earth as it was forming billions of years ago, spewing debris ...

A new study of metal ore deep inside the moon is offering fresh evidence that Earth's natural satellite was formed by an ancient planet crashing into Earth long ago. This long-theorized interplanetary ...

There are two giant but mysterious structures underneath the Earth’s surface, which just might be part of an ancient planet. Yep, all this time we’ve been looking to solve the mysteries in space – but ...

An collision early in the history of Earth's formation is widely believed to have been the cause of the moon's formationMark A. Garlick/MPS It's the stuff of a science fiction movie: a planet in the ...

The study has also cast doubt on theories surrounding how water formed on earth THE moon is just a chunk of the Earth and not mainly part of an ancient planet as previously thought, scientists claim.

The space smash that helped lead to the formation of the Moon as we know it, also left alien “blobs” deep inside the Earth, says a new study. For decades, it has been believed that the Moon was formed ...

Scientists believe a Mars-sized object smashed into Earth, flinging debris into space that later became the Moon THE moon was once covered in a sea of boiling lava, experts say – and they have ...

Sunken slabs from long-lost tectonic plates are still churning around in Earth's interior, far below your feet. In a new ...

Scientists have discovered that some ancient black holes are altering Earth's orbit. A team at Massachusetts Institute of Technology (MIT) has suggested swirling masses of matter, called primordial ...