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Chinese lunar samples revise impact history, showing steady decline in early impacts and supporting a uniform dating model.
Chinese scientists have revised the lunar impact chronology using samples from the Chang’e-6 mission, which returned 1,935 grams of material from the moon’s far side in June 2024.
The samples, including 4.25-billion-year-old norite and 2.807-billion-year-old basalt, helped establish a uniform impact flux across both lunar hemispheres.
By combining crater density data from high-resolution images with historical samples, researchers found a steady decline in early impacts, challenging the Late Heavy Bombardment theory.
The findings support a globally consistent lunar dating model, improving age estimates for the moon and other planetary surfaces.
Las muestras lunares chinas revisan la historia de los impactos, mostrando una disminución constante en los impactos tempranos y apoyando un modelo de datación uniforme.