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Scientists finally reveal what’s inside the moon

After decades of understanding the moon, a thorough analysis has revealed that the moon’s interior is actually a solid ball with an iron-like solidity.

Scientists discovered that the lunar core resembles the Earth in many ways, having a solid inner core and an outer fluid layer. The inner core’s radius is around 258 kilometers (160 miles), whereas the outer core’s is approximately 362 kilometers (225 miles). That represents roughly 15% of the Moon’s overall radius.

Artist’s impression of many devices measuring the Moon’s properties in order to determine its core (Géoazur/Nicolas Sarter)

It is said that Scientists can produce a precise map of the inside of a planet or moon by studying the path taken by quake-generated acoustic waves as they pass through and reflect from the planet or moon’s internal material – which will be possible through the usage of seismic data that probes the interior composition of objects in the Solar System.

According to the astronomer, Arthur Briaud of the French National Centre for Scientific Research in France, the results “question the evolution of the Moon’s magnetic field thanks to its demonstration of the existence of the inner core and support a global mantle overturn scenario that brings substantial insights on the timeline of the lunar bombardment in the first billion years of the Solar System,” he said.

In order to create a profile of numerous lunar properties, Briaud and his colleagues compiled data from space missions and lunar laser range studies. These include its density, the change in its distance from Earth, and the extent of its gravitational interaction with Earth.

This analysis was detailed in a study published in Nature on May 3 by a team of researchers from the Côte d’Azur University and the Institute of Celestial Mechanics and Ephemeris Calculations (IMCEE).


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