Since ancient times, humanity has deepened its understanding of the land in which it lives by investigating the wisdom and technology of each age. For example, the deep interior, which cannot be seen directly, has been studied extensively using seismic waves, but it is still full of mysteries.
Under these circumstances, experiments have shown that there is a large amount of hydrogen in the “core” at the center of the earth and that early earth appears to have 50 times more water than seawater today. Announced by research groups like universities. Small celestial bodies collided one after another and a large amount of water was transported, but most of them decomposed and hydrogen was transferred to the nucleus. It was an important achievement to understand how the current earth that nurtures life was created, such as the relationship between the land and the sea and the depth of the sea.
It seems that the amount of water transported by celestial impacts on the land about 4.5 billion years ago was an order of magnitude greater than that of seawater today. The clarification of what happened to the water is an important task to understand the origin of the earth.
It has been noted for about 70 years that the outer core is 8% less dense than iron and should contain a large amount of some light element.
The primitive land was covered by the magma sea “Magma Ocean”. The iron that fell here due to the impact of the celestial body did not melt and sank into the core due to its high specific density. At that time, it is considered that the light elements contained in the magma were absorbed by a chemical reaction. In addition to the hydrogen and oxygen that make up water, sulfur, silicon, and carbon are considered the most promising elements but have not been clarified.