Chunks of an alien world could be hidden deep within our planet, say scientists

Wed, 11/01/2023 - 12:02

An artist's illustration shows a smaller planet, Theia, crashign into the early Earth, which looks barren and molten. Fragments of Theia are shown to migrate inside our planet. — An artist's impression shows the hypothesized collision between Theia and Earth
DENG Hongping and Hangzhou Sphere Studio

Scientists think a planet may have crashed into Earth 4.5 billion years ago, creating the moon.
This alien planet, Theia, was thought to have completely disappeared in the collision.
A new study suggests parts of Theia still exist in our planet, around Earth's core.

Continent-sized chunks of an alien world may be hiding deep within our planet — and it could explain the weird structures that appear to be surrounding Earth's core.