Research has not yet taken into account hydrogen in the Earth's core.
It's one of the biggest mysteries of our cosmic home. Where did the water come from the Earth?
The answer to this question has a broader meaning, in fact, cosmic. It shows whether the water is also common on the remote universe stone exoplanets.
A new study by scientists from the Arizona State University argues that the Earth's water comes not only from asteroids but also directly from the germinal nebula of the solar system. What this means is that water can also be numerous in the exoplanets that have ever been astounded.
Research paper published by the Journal of Geophysical Research magazine: Planets.
Many researchers thought the water fell out of the sky. On Earth it was as part of asteroids. For example, carbon asteroids can contain more than 20% of water.
Such an scenario suggested the isotopic composition of the oceans. Specifically, the hydrogen-heavy deuterium ratio (containing one more hydrogen) has to light the hydrogen process.
"It's like a blind fan of a professional community," said co-author Steven Desch. "Scientists have measured the ratio of isotopes in the sea and find that it corresponds to the ratio in the asteroids, so they slipped to the belief that all the water came from asteroids."
Slim of the depth
However, recent research has found that the isotopic seawater composition is not representative. Samples of hydrogen from the debris, especially from the core and casin area of the earth, contain much less hydrogen.
In the same area, rare helium and neon gases were found with an isotopic composition of surprise origin. It seems that they come directly from the germinal gas-resistant nebula that created the sun.
The deep creatures of our planet became another important attraction. Although the core of the earth is mainly iron and nickel, about 7% of weight corresponds to light elements.
Among other things, there is hydrogen. At the time of forming the Earth, he was bound to iron, and with her he fell into the center of the planet.
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Earth appears to have been derived from the divine origin.
Although hydrogen is only a fraction of Earth's core bras, it's probably huge.
"Geochemical signs show that the Earth's core contains an amount of hydrogen that corresponds to many oceans. It can even contain most of the Earth's hydrogen," the authors report in a study.
Scientists add that the research has not yet taken into account how the iron binding process has affected the isotopic composition of the rest that has remained near the surface.
"When the hydrogen molecule breaks down, it's easy for isotopes to be bound to metals, so the isotopic composition of the environment changes," the researchers explain.
At least per cent of molecules
Scientists from the Arizona State University have considered this influence in their calculations. They find the original isotopic composition of the Earth's hydrogen, finding out what resources and how much they contribute to its supply.
The results of the study show that part of a terrestrial hydrogen – and therefore water – does not come from asteroids, but directly from the germinal nebula of the solar system.
"For each molecule of terrestrial water, one or two sunburns come," said lead author, Jun Wu.
"Charging" of hydrogen
The Earth has got the sunflower hydrogen at a very early stage of development. At a time when violent collisions with other planets fetuses partly melted down to create hundreds of miles of deep sea magma.
At present, sunny nose gases were being packed seriously. In addition to helium and neon and hydrogen.
The nebula contained less heavy hydrogen than asteroids. But in connection with the magical sea, light iron was tied to iron clusters. Heavy deuterium was still near the surface.
The ultimate iron falls in the melting to the center of the body and forms (mainly) the metal core. Along with the absorption of hydrogen, whose ratio of isotopes is different from the later oceans on the surface.
Good news about life
Researchers from the Arizona State University recall that planets in other planetary systems will not have enough supply of water-filled asteroids.
But the findings of their study suggest that such a world will not lose water. An incredible amount of raw material – hydrogen – is directly obtained from germinal nerve.
"From a model, it seems that the arrival of water will necessarily occur on every large stone exoplanet," said Jun Wu. "The advent of water is an inevitable result of the formation of large enough planets outside the solar system."