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Universe Today
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Image Credit: Universe Today
Why We Think Theia Existed
- The giant-impact hypothesis suggests that a Mars-sized body named Theia collided with the early Earth.
- The collision with Theia altered Earth's rotational dynamics and led to the formation of the Moon.
- The existence of a substantial moon is a unique characteristic of Earth among rocky planets.
- Evidence from the lunar regolith returned by Apollo missions supports the common origin of Earth and the Moon.
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