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the claim
Rocks on Mars and the Moon are identical in composition to rocks on Earth
the verdict
REFUTED
the evidence says no
refutedsupported
the weight of evidence
1 source for · 5 against

Scientific evidence and isotopic analyses demonstrate that rocks on Earth, Mars, and the Moon are not identical in composition, showing distinct planetary isotopic signatures and chemical differences.

Evidence for · 1
OpenAIRE: Earth vaporised and the moon then sprang out
2018 · cited by 0
Notes that Apollo moon rocks suggest the Moon's make-up is almost identical to Earth's due to impact models.
Evidence against · 5
Martian basalt (shergottite) Queen Alexandra Range 94201 and lunar basalt 15555: A tale of two pyroxenes
1998 · cited by 16
Compares Martian and lunar basalts, detailing distinct crystallization histories and elemental zonation differences.
See more details
The analysis

Judged against the evidence record for claims of this kind.

More against · 4
West Pub. Co: Instructor's manual to accompany Essentials of the dynamic universe: Introduction to astronomy [by] Theodore P. Snow
1990 · cited by 0
States explicitly that the chemical compositions of the Earth and the Moon are not identical.
OpenAIRE: Iron isotope differences between Earth, Moon, Mars and Vesta as possible records of contrasted accretion mechanisms
2004 · cited by 0
Shows measurable isotopic differences in iron between Earth, Moon, and Mars, disproving identical composition.
OpenAIRE: Super-chondritic Sm/Nd ratios in Mars, the Earth and the Moon
2008 · cited by 0
Identifies small isotopic differences and non-chondritic compositions distinguishing Earth, Moon, and Mars.
OpenAIRE: The SNC meteorites are from Mars
2000 · cited by 0
States that the chemical compositions of Martian meteorites are quite different from rocks from the Earth and the Moon.
Everything we examined (23)
  1. Wikipedia: Marsreferenceno side takennot shown: read and judged not to bear on this claim
  2. Book: Encyclopedic Atlas of Terrestrial Impact Cratersreferenceno side takennot shown: read and judged not to bear on this claim
  3. Book: Life in the Universe, 5th Editionreferencerefutesnot shown: a book whose author and subject did not establish authority here
  4. Book: From Dust to Lifereferenceno side takennot shown: read and judged not to bear on this claim
  5. Book: The Universereferencerefutesnot shown: a book whose author and subject did not establish authority here
  6. Book: The Earthreferenceno side takennot shown: read and judged not to bear on this claim
  7. Book: Physical Geologyreferenceno side takennot shown: read and judged not to bear on this claim
  8. Cambridge University Press: An introduction to the solar systemreferenceno side takennot shown: read and judged not to bear on this claim
  9. D.C. Heath: Physical geologyreferenceno side takennot shown: read and judged not to bear on this claim
  10. West Pub. Co: Instructor's manual to accompany Essentials of the dynamic universe: Introduction to astronomy [by] Theodore P. Snowreferencerefutes
  11. Saunders College Pub.: Contemporary physical geologyreferenceno side takennot shown: read and judged not to bear on this claim
  12. Copernicus: Rare earth : why complex life is uncommon in the universereferenceno side takennot shown: read and judged not to bear on this claim
  13. Fitzroy Dearborn: Encyclopedia of geologyreferenceno side takennot shown: read and judged not to bear on this claim
  14. Wm. C. Brown: Earth, then and nowreferenceno side takennot shown: read and judged not to bear on this claim
  15. J. Wiley: The analysis of extraterrestrial materialsreferenceno side takennot shown: read and judged not to bear on this claim
  16. OpenAIRE: Iron isotope differences between Earth, Moon, Mars and Vesta as possible records of contrasted accretion mechanismspeer-reviewedrefutes
  17. OpenAIRE: Earth vaporised and the moon then sprang outpeer-reviewedsupports
  18. OpenAIRE: Super-chondritic Sm/Nd ratios in Mars, the Earth and the Moonpeer-reviewedrefutes
  19. OpenAIRE: Silicon isotopes in lunar rocks: Implications for the Moon’s formation and the early history of the Earthpeer-reviewedno side takennot shown: took no side on this claim
  20. OpenAIRE: The SNC meteorites are from Marspeer-reviewedrefutes
  21. OpenAIRE: Mechanisms of Earth differentiation: Consequences for the chemical structure of the mantlepeer-reviewedno side takennot shown: read and judged not to bear on this claim
  22. The composition of Solar system asteroids and Earth/Mars moons, and the Earth–Moon composition similaritypeer-reviewedno side takennot shown: took no side on this claim
  23. Martian basalt (shergottite) Queen Alexandra Range 94201 and lunar basalt 15555: A tale of two pyroxenespeer-reviewedrefutes
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → REFUTED · 1005 Aug 2026
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