Astronomers of the University of Münster (Germany) proved that Mars and the Earth were formed mainly from the substance in the inner field of the solar system, and only a small proportion of the material arose beyond the limits of the orbit of Jupiter. The discovery confirms the main theory of the origin of the stony planets. This is reported in an article published in the journal Science Advances.
Researchers have determined the exact isotopic composition of both planets and compared them with isotopic analysis of meteorites and debris from the external and inner field of the solar system. It is assumed that isotopes in the early solar system were unevenly distributed, which makes it possible to determine which material it was formed by a particular celestial body. In total, scientists studied the isotopic composition of 17 Martian meteorites and found the presence of titanium isotopes, zirconium and molybdenum.
Specialists also simulated, which should be the ratio of material received from the external and internal regions of the solar system to reproduce the isotopic composition of Mars and Earth. The isotopic composition of the substance formed by the orbit of Jupiter is known for the isotopic composition of carbon chondrite, and the substance from the internal regions – non-expensive chondrites.
The results of the researchers show that the external rocks of the Earth and Mars have little common with carbon chondrites of the external part of the solar system. They account for only about four percent of the initial breeds of both planets. However, astronomers also found the presence of a substance that arose near the Sun, but it does not occur in non-expensive chondrites. This is explained by the fact that it was fully used in the event of stony planets.