A Planet Inside a Planet? Traces of Pre-Moon Earth Found Deep Below

When a Mars-sized meteorite slammed into Earth billions of years ago, the impact completely reset any and all chemical processes on Earth, leaving nothing from before. Or so we thought.

Oct 17, 2025 2

A Planet Inside a Planet? Traces of Pre-Moon Earth Found Deep Below
Mit Proto Earth Potassium

When a Mars-sized meteorite slammed into Earth billions of years ago, the impact completely reset any and all chemical processes on Earth, leaving nothing from before. Or so we thought.
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