When worlds literally collide: Earth may still contain remnants of the ancient planet Theia
Relics from a protoplanet that is believed to have struck the Earth billions of years ago could very well be detectable, scientists argue in a new paper.
Our solar system was a violent place 4.5 billion years ago. As planetesimals were forming out of a disk of gas and dust surrounding our sun, they began to collide. This process led to the formation of the larger protoplanets that would become our solar system.
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