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Scientists, After 50+ Yrs, Discovered That The Moon Has A Solid Inner Core & Fluid Outer Core, Similar To Earth. Computer Model Based On Apollo And Grail Data Found The Inner Core To Be 310 mi Wide. Mantle Overturn Evidence May Explain Iron On The Moon’s Surface. This Find Could Help Solve The Moon’s Geologic Puzzles & Aid Future Missions.

https://www.yahoo.com/entertainment/1st-time-scientists-confirm-moon-164507078.html

After more than 50 years, scientists finally confirmed that the moon has a solid inner core, just like Earth.