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Tuesday, August 15, 2017

Mercury recorded a phenomenon considered unique to Earth


Geophysicists working within the mission, MESSENGER discovered that mercury is observed tectonic activity. Informed of all the planets in the Solar system, this phenomenon was considered as characteristic only for the Earth. As explained by experts at the American space Agency NASA, the geological activity could explain two features of mercury, at different times recorded by professionals.


photo: pixabay.com

Studying the Mercurian images, the researchers found nearest to the Sun planet previously has eluded their attention to the elements of the landscape — the slopes look like steps. Further study showed that they were formed in the result of the recent changes in the elevation, and therefore, the most likely cause of these slopes is the movement of tectonic plates in the past. This, in turn, suggests that the geologically active mercury almost certainly is now.

Scientists maintain that tectonic movements on mercury is of the same nature as on Earth. Apparently, the earth is still cool, causing the crust, heated from within and cooled from the outside, gradually shifted and cracked. Experts suggest that indirectly geological activity allows you to understand the nature of previously detected magnetic field of the planet — its presence can also be attributed to the cooling core.

Automatic interplanetary station MESSENGER (MErcury Surface, Space ENvironment, GEochemistry and Ranging), which the researchers made their discovery, was launched to mercury on August 3, 2004 and April 30, 2015 has completed its work, falling on the planet.

Evidence of tectonic activity on mercury, scientists reported in the scientific journal Nature Geoscience.

Mercury — closest to Sun and the smallest planet in the Solar system, its radius is only about 2440 kilometers, and the planet’s core is 83% of its volume (much more than, for example, the Earth). One revolution in its orbit mercury takes almost 88 earth days. Its name he received for the high speed at which orbits in honour of the fleet-footed Roman God of Commerce.

source

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