Geological and geochemical evidence indicates the Moon formed from a giant impact with the early Earth

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Geological and geochemical studies consistently support the giant impact hypothesis, in which the Moon formed from a collision between the early Earth and a planetary body such as Theia.

The analysis

Papers [0] and [1] directly address the Moon-forming giant impact hypothesis using geochemical and isotopic constraints, providing clear support for the claim. The remaining papers discuss unrelated topics such as prebiotic chemistry, impact basins on the lunar farside, or solar wind sputtering, and are thus tangential.

Evidence for · 2

Geochemical Constraints on the Size of the Moon‐Forming Giant Impact

Recorded source metadata

Hélène Piet, James Badro, Philippe Gillet. Geochemical Constraints on the Size of the Moon‐Forming Giant Impact. 2017. https://doi.org/10.1002/2017gl075225

Paper [0] models the geochemical constraints and mantle impact consequences of the Moon-forming giant impact hypothesis.

Source citation format

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More for · 1

Oxygen isotope identity of the Earth and Moon with implications for the formation of the Moon and source of volatiles.

Recorded source metadata

Fischer M, Peters STM, Herwartz D, Hartogh P, Di Rocco T, Pack A. Oxygen isotope identity of the Earth and Moon with implications for the formation of the Moon and source of volatiles.. 2024. https://doi.org/10.1073/pnas.2321070121

Paper [1] discusses isotopic evidence and geochemical identity regarding the collision between proto-Earth and Theia that formed the Moon.

Source citation format

The paper trail · every fact has a biography

first checked02 Aug 2026

judged → SUPPORTED · 8202 Aug 2026

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