Scientists have said that Mercury may be hiding a thick layer of diamonds inside. The researchers came to this conclusion after a new analysis of data from the MESSENGER mission and modeling of the internal structure of the planet. The results of the scientists' research were published in the journal Nature Communications and reported on by the Daily Galaxy on May 11.
Previously, Mercury's dark surface was associated with graphite deposits and high carbon content. However, new calculations have shown that the pressure at the boundary between the planet's core and mantle is much higher than previously thought. Under such conditions, not graphite, but diamonds can be formed from carbon.
Researchers estimate that the diamond layer can reach a thickness of 15 to 18 km. Scientists believe that diamonds could have formed both during the crystallization of Mercury's ancient magma ocean, and later during the gradual solidification of the planet's metallic core.
During the experiments, the researchers also found that the large amount of sulfur inside Mercury promotes the formation of diamonds at high temperatures and pressure.
The study authors note that the presence of a diamond layer can also affect the planet's magnetic field, since diamonds conduct heat differently than other minerals.
Scientists emphasize that the theory has not yet been conclusively confirmed. This will require new missions and a more detailed study of the internal structure of Mercury.
