Abstract
![Figure][1] CREDIT: WEBER ET AL. The Apollo Passive Seismic Experiment measured lunar ground motion until the mid-1970s. Since then, various efforts have attempted to extract all possible information about the interior of the Moon from this unique data set. Recent computational and methodological advances suggest that reprocessing the aging seismic data may provide previously inaccessible information buried within. To that end, Weber et al. (p. [309][2], published online 6 January) reanalyzed the Apollo data using a method typically reserved for processing seismic array data on Earth. The data indicate that the lunar core, like Earth's, consists of a solid inner core and molten outer core. Unlike Earth, however, the Moon also has a thick partial melt layer resting above the outer core. [1]: pending:yes [2]: /lookup/doi/10.1126/science.1199375
Published Version
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