A meteorite discovered in Africa offers new evidence that a massive collision on the moon roughly 3.5 billion years ago was so violent it melted the lunar surface. The space rock, analyzed by researchers, is believed to be a piece of the moon ejected during that ancient impact. This finding provides a rare glimpse into the moon's early, tumultuous history.
The meteorite's composition suggests it originated from a region of the moon that experienced extreme heating. Scientists believe the impact that created this molten surface was far larger than typical lunar craters. This event likely occurred during a period of heavy bombardment across the solar system.
Analysis of the rock's mineral structure and isotopic ratios points to a single, cataclysmic event rather than gradual surface changes. The data aligns with computer models of large impacts capable of generating enough heat to melt rock. This study is published in a peer-reviewed scientific journal.
The research helps refine timelines of lunar evolution and the frequency of massive impacts in the inner solar system. Understanding such events is crucial for interpreting the history of Earth, which has largely erased similar evidence. It also informs future lunar exploration missions targeting ancient terrain.
The findings are based on a single meteorite, and researchers note that more samples are needed to confirm the extent of such melting events.