Science, Space and Technology News 2023
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A team including Southwest Research Institute’s Dr. Raluca Rufu recently determined that the majority of the Moon’s constantly shaded areas are approximately 3.4 billion years old at most and can contain relatively young deposits of water ice. The scientists used AstroGeo22 and LOLA height measurements to calculate the age of the Moon’s permanently shadowed regions near its poles. Colored patches show the extent of PSRs 3.3 billion years ago , 2.1 billion years ago , and close to present-day with current topography. These findings suggest that current estimates for cold-trapped ices are too high. Credit: Schörghofer/Rufu
“The time evolution of the Moon-Earth distance remained an unsolved problem for half a century,” Rufu said. “However, these new geological proxies for the history of the Earth-Moon system allow us to calculate the Moon’s axial tilt and the extent of PSRs over time.”
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