JOURNAL ARTICLE

Moon's ancient magnetic field may have flickered on and off: Billions of years ago, melting rocks deep inside the Moon could have led to bursts of surprisingly strong magnetism.

  • Published In: Sciencemag.org, 2026. P. N.PAG 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Thaler, Perri 3 of 3

Abstract

The article focuses on new research explaining the origin of the Moon’s ancient magnetic field recorded in Apollo lunar rock samples. Scientists propose that episodic melting of titanium-rich magma near the Moon’s core between 3.5 and 4 billion years ago caused short bursts of strong magnetism by stirring the core’s dynamo, rather than a sustained magnetic field. This theory addresses previous contradictions in the data, suggesting that sampling bias from Apollo landing sites influenced earlier interpretations. The findings open avenues for further study as new lunar samples from recent Chinese missions and upcoming NASA plans become available. [Extracted from the article]

Additional Information

  • Source:Sciencemag.org. 2026/02, pN.PAG
  • Document Type:Article
  • Subject Area:Astronomy and Astrophysics
  • Publication Date:2026
  • Accession Number:191951213
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