Thanks. It's based on the following data (from the same link): "Lunar seismicity was recorded by four seismometers placed at the Apollo 12, 14, 15 and 16 landi

Thanks. It's based on the following data (from the same link): "Lunar seismicity was recorded by four seismometers placed at the Apollo 12, 14, 15 and 16 landing sites. These seismometers operated from 1969 to 1977 and recorded 28 shallow moonquakes." and it's a more modern and definitely interesting approach to analyze these measurements. The conclusion which "strongly" suggests that "the Moon is tectonically active" is an argument to measure more in the future. The new measurements and the refinement of their analysis could surely increase our capabilities of modelling the rocks and the layers, even on the Earth. It doesn't however mean that the structure of the Moon fully matches that of Earth. But also: https://en.wikipedia.org/wiki/Geology_of_the_Moon https://en.wikipedia.org/wiki/Geology_of_the_Moon "Studies of the Moon's physical librations (small perturbations to its rotation) furthermore indicate that the core is still molten." is a Wikipedia claim without the citation. But in NASA's article from 2011: https://www.nasa.gov/topics/moonmars/features/lunar_core.html https://www.nasa.gov/topics/moonmars/features/lunar_core.htm... "The team's findings suggest the moon possesses a solid, iron-rich inner core with a radius of nearly 150 miles and a fluid, primarily liquid-iron outer core with a radius of roughly 205 miles. Where it differs from Earth is a partially molten boundary layer around the core estimated to have a radius of nearly 300 miles." Also note the estimated sizes of each layer: https://www.nasa.gov/images/content/508668main_lunar_core_lg.jpg https://www.nasa.gov/images/content/508668main_lunar_core_lg... Also, the results of the GRAIL mission which ended in 2012 suggest that the lunar crust is thinner than the previous estimates.