Sunday, December 22, 2024
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A new paper published in Nature proposes that the Moon may have undergone a “remelting” event roughly 4.35 billion years ago, which would explain why lunar samples collected so far appear to be much younger than the Moon likely is. Scientists believe the Moon was formed by a collision between the early Earth and a Mars-sized object, but that event should have occurred closer to 4.5 billion years ago, in line with models of solar system formation.
This discrepancy could be due to tidal forces from the Earth causing enough internal friction to melt the Moon's surface. This “remelting” would have essentially reset the geological clock of the Moon, making samples appear younger. This theory could also explain why there are fewer lunar impact basins from early bombardment than expected. The authors hope to confirm this theory with further modeling and analysis of new samples from China’s Chang’e 6 mission.
P. Geo. Ricardo A Valls, M. Sc. and Geo Gadfly
Valls Geoconsultant
ORCID ID- https://orcid.org/0000-0002-5421-0914
Scopus Author ID: 7003369619/35335510700
ResearcherID: S-6604-2018
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