In May 2023, scientists confirmed the Moon has a solid inner core about 300 miles wide with an iron-like density of 7,822 kg/m³. This Earth-esque core, surrounded by a fluid outer layer, offers fresh insights into lunar formation and its once mighty magnetic field—100 times stronger than Earth's. Leveraging data from multiple space missions and lunar ranging experiments, this discovery paves the way for deeper Moon exploration. Looks like the Moon isn't just a pretty face after all!