Bits of a hypothetical planet Theia hidden on Earth

 Image courtesy of NASA

Joel Kontinen

Some scientist say that a hypothetical planet called Theia slammeds into Earth, and thus  created the Moon- .   They say that there are chunks of an ancient planet trapped in Earth’s mantle. This is according to the commonly held hypothesiss that a  Mars-sized object called Theia slammed into Earth and was blown to bits.

“For decades, researchers have known that there are two areas in Earth’s mantle, each tens of kilometres across, that behave slightly differently from the surrounding rock.”

 “They found that rocks from Theia’s mantle would have melted and sunk to the boundary between Earth’s mantle and core, creating a thin layer that coated  Earth,

This is just one of their not so fascinated stories, 

Source:

Leah Crane. 2023,, Bits of an ancient planet called Theia may be buried in Earth’s mantle New scientist 1 November.