According to scientists, our planet is believed to have formed as a result of a new theory. A major advantage of this theory is not only that it answers the question of how our planet got here, but that it also explains the Earth's unusual chemical composition. And that it might also help provide some insights into how other planets like ours may have formed.

According to astrophysics and cosmochemistry, the Earth is believed to have been formed by chondritic asteroids. The solar system contains a variety of relatively small, simple rock and metal blocks that formed early in the universe, according to Paolo Sossi, professor of experimental planetology at ETH Zurich.

“The only problem with this theory is that it is not possible to explain the exact composition of the Earth by a mixture of these chondrites because the composition of the Earth is predominantly composed of light, volatile elements such as hydrogen and helium, which are much lower than we would have expected.

In order to explain this phenomenon, many theories have been proposed over the years. The most popular one has been the idea that collisions of the raw materials that formed the Earth generated a great deal of heat and a lot of lighter materials were vaporized.

The Earth's isotopic composition suggests otherwise. According to Professor Sossi, all the isotopes of a chemical element contain the same number of protons, despite having different numbers of neutrons. Professor Sossi explained that isotopes with fewer neutrons are lighter, so they should have a better chance of escaping.

It has been suggested that if the theory of vaporization by heating were true, fewer of these light isotopes would be found on Earth than in the original chondrites. However, the measurements of isotopes do not suggest this.

Scientists suggested that planets form over time by accumulating material via their gravitational pull and then growing into their planetesimals - small bodies of accreted gas and dust.

The planetesimals differ from chondrites in that they are characterized by separating metallic cores from rocky mantles; these metal-rich cores have a different chemical composition than the ones that are found in chondrites. Moreover, planetesimals formed at different locations around the Sun, or at different times, can have strikingly different chemical compositions.

As part of their simulation, the team examined whether a collision between thousands of planetesimals would produce bodies that would be similar to Mercury, Venus, the Earth, and Mars. Several simulations have indicated that not only could the Earth have been formed by a mixture of several planetesimals, but that a planet with the earth's composition has the highest statistical probability of forming.

“It was very remarkable to find the result, even though we were well aware that it would occur,' said Sossi.“Our new discovery has provided us with a mechanism that better explains the formation of the Earth, but it has also provided us with a reference that can be used to explain the formation of the other rocky planets,” says the researcher.

Mercury's composition could be predicted, for instance, by using this mechanism, or exoplanets of other stars could be predicted by using the mechanism.