Two scientists from the Netherlands have developed a theory of the formation of the Moon, based on the assumption that the substance, which became part of the satellite separated from the young Earth at the time of powerful natural explosion.
The most popular giant impact theory is now considering the formation of the Moon as a result of the collision of Earth with an object the size similar to Mars. As the simulation, such a development, only about 20% of the substance of the satellite must have an earthly origin, all the rest, obviously, comes from the incident site.
This result is not consistent with the fact that the isotopic composition of terrestrial and lunar material is almost identical. There are hypotheses to explain the similarity of the isotopic ratios for light elements, but in the case of heavy elements (chromium, neodymium, tungsten), they do not work.
An alternative theory, created by George Darwin, son of the famous naturalist, solves this problem. Scientists have suggested that Earth and Moon formed from a rotating bunch of molten rock, and the speed of its rotation was so high that the strength of the gravitational interaction only slightly superior to the centrifugal. The separation of the Moon required a small perturbation; one, however, was never able to figure out what exactly caused the separation of substances, and this hypothesis has lost popularity.
The authors propose to consider such a perturbing effect on the explosion. In their view, the effect of centrifugal forces should lead to increased concentrations of heavy elements (such as thorium and uranium) near the surface of the Earth’s future in its equatorial plane. The calculations show that the concentration may exceed the value required to start a nuclear chain reaction and explosion.
In favor of this theory suggest high concentrations of the isotopes 3He and 136He on the moon. Unfortunately, the constant replenishment of the solar wind reserves of helium-3 on the moon’s surface does not allow definitive conclusions about the “natural” concentration of this isotope, samples of the substance must be raised with considerable depth.
The very possibility of existence of natural nuclear reactors, we note for a long time does not surprise anyone. The most famous example – the reactor in Gabon, which functioned about 1,5 billion years ago.