June 5, 2023


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The Moon may be obsessed with nature, but it certainly isn’t empty on the inside

Isaac Asimov, author of popular SF books, has already suggested that the Moon is a freak of nature, because it shouldn’t orbit the Earth. It is “too big” for our planet – we don’t know of another such case in the solar system. According to Asimov, an “Earth-matching” satellite should be about 48 km in diameter at best, when in reality the Moon is more than 70 times larger.

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This is just one of the many lunar anomalies that have led some pseudoscientists to claim that our natural satellite is hollow. Now we have confirmation that the solid inner core of the Moon is similar to Earth’s core. Study details have been published in nature.

The moon has an inner core similar to Earth’s

More than 50 years after the first space mission to the Moon, there is no longer any room for doubt. Scientists were able to determine that the solid inner core of the moon consists of a metal with a density similar to that of iron. It is surrounded by a liquid outer core, just like Earth. This hypothesis has now been confirmed thanks to the work of scientists With the CNRS, the Côte d’Azur University, the Côte d’Azur Observatory, the Sorbonne University, and the Paris-PSL Observatory.

Moon – Interior Diagram / Pictures. Geoazur / Nicolas Sartre

The inner core has a density of about 7822 kg/m3 And in some ways it is similar to iron. Its radius is also approximately 362 km. While seismic data from the Apollo missions did indicate what was inside the Moon, it was of low quality and did not clearly indicate a solid inner core. Its existence has been confirmed using data from various space missions and laser measurements.

Our results challenge the evolution of the moon’s magnetic field because they reveal a solid inner core. They also support a planet-wide scenario that provides important insights into the timeline of lunar bombardment in the first billion years of the solar system.
Dr.. Arthur Brioud of the Côte d’Azur Observatory

The new findings confirm previous findings by Curiosity in 2011, when evidence of a solid inner core with a radius of 240 km and a density of about 8,000 kg/m was found.3.

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This research should definitively settle the long-running debate about whether there is a molten or solid core at the center of the moon. They should also contribute to a better understanding of the history of our natural satellite.