Mercury transit 2019 – planet passes in front of Sun in rare space event
A new study has found evidence of a trove of diamonds between 9 and 11 miles thick buried beneath Mercury's surfaceIt has a weak magnetic field, just 1% the strength of Earth's. It has a massive core in relation to its puny size. And despite being the smallest planet in the solar system, it is the second densest.have made it a topic of fascination for years - and now, it seems researchers have uncovered yet another curious detail.
This theory suggests Mercury once had a molten surface layer or magma ocean containing a large amount of carbon. As the planet cooled, this carbon formed a graphite crust. This means pressure and temperature at the boundary between the core and the mantle are significantly higher - and these extreme conditions could prompt carbon to crystallize, forming diamonds.
The paper proposes that the crystallization of the core led to the formation of a diamond layer at the core-mantle boundary.The glistening gems are inaccessible, 300 miles below the planet's surface - and that's not to mention Mercury's extreme heat and coldThey also suggest that the present temperature at the boundary is close to the point where graphite can turn to diamond, stabilizing the temperature as a result.
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