American geophysicists have explained the origin on Earth of carbon — chief for life on the planet element. A study published in the Nature Geoscience magazine, briefly about it reports the edition EurekAlert!
Approximately 4.4 billion years, the Earth faced the protoplanets the size of a modern mercury. This led to the fact that the surface was first listed carbon, the previously vanished with her.
To such conclusions scientists have come, having modeled the evolution of celestial bodies occurring at high pressures and temperatures. In the initial stages of development of the planet, the carbon under such conditions should evaporate into space or to penetrate the core.
Re-enriched chemical element in the Earth could as a result of collision with a celestial body such as mercury, derived almost entirely from your core. This led to the mixing of the mantles of the two objects and the enrichment of the Earth’s surface with carbon. A new study explains why the planet is rich in this chemical element in nowadays.
Mercury — the smallest and lightest planet in the Solar system easier and less Land is about 20 times. The average density of it is about the same as that of the Earth. Year on the planet lasts about 88 days. Mercury from the other planets in the Solar system has a large metallic core accounts for 85 percent of the radius of this celestial body. For comparison, the Earth’s core has only half its diameter.
