Perhaps, the new study suggests, those clumps came from the protoplanet that smashed into Earth, leading to the moon’s formation. When the impactor Theia hit Earth 4.5 billion years ago ...

Advertising When Theia hit Earth, the models found, the collision melted the crust and outer part of the mantle of Earth, mixing them with bits of Theia. The moon formed out of that cloud of debris.

And many scientists assumed any debris Theia left behind on Earth was blended in the fiery cauldron of our planet’s interior. A new theory, however, suggests that remnants of the ancient planet ...

"One explanation is that Theia lost its rocky mantle in earlier ... further impacts known as the "Late Veneer Event." As the Earth was hit much more frequently by these impacts than the Moon ...

The moon came to be when the Earth collided with a smaller planet named Theia. However, no remains of this smaller planet have ever been found, which has puzzled scientists for years. A stock ...

It's believed that when the Earth was young, "something big," about the size of the planet Mars, known as "Theia," hit it, according to NASA. The impact was so massive that it threw our planet off ...

"An object bigger than Mars hit Earth early in its history and ... theory that suggests a Mars-size planet named Theia collided with Earth 4.5 billion years ago, launching a salvo of rocky debris ...

In the aftermath of this collision, it’s usually thought that material from Theia mixed with Earth’s mantle, so that the planet and the newborn Moon share the same general composition.

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 ...