Theia

Earthquakes Caused by Mysterious Blobs Inside Earth, Scientists Say

There's Wreckage of an Alien Planet Deep Inside the Earth, Scientists Say

Brutal Video Simulates When Earth Hit Another Planet Many Years Ago

Pieces of Alien Planet Buried Inside Earth Are "Millions of Times Larger Than Mount Everest"

There Appears to Be a Huge Chunk of an Ancient Planet Buried Inside Earth

Fragment of Planet That Hit Earth May Be Buried Inside Moon

New Theory: The Moon Formed From Magma Blasted Away From Earth

Scientists Assert That Earth is Really Made of Two Different Planets