Comets and small cosmic bodies from the asteroid belt and beyond Jupiter’s orbit became terrestrial water sources. This was reported by the Ministry of Education and Science of the Russian Federation with reference to the Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences.
The main problem with the emergence of water on Earth is that the birth of the planet took place in the hot part of the protoplanetary disk with a temperature of more than 1000 K. Water ice can only exist stably at a distance of only three astronomical units. Sun (three radii of Earth’s orbit). As a result, all the water that came to Earth was brought from behind the snow line by asteroids and comets in later geological periods. Now astronomers have tried to reproduce this process by numerically simulating ancient orbits.
“By employees of the Institute of Geochemistry of the Russian Academy of Sciences, on the basis of a long research complex and a series of numerical calculations of evolution, conclusions were drawn about the migration of bodies to Earth due to the ice line. orbits of bodies originally located in the region of the giant planets and in the outer asteroid belt. In these calculations, the probability of collision with the Earth of objects coming from different distances from the Sun has been calculated. Scientists say it has been shown that the total mass of matter from objects delivered to Earth from behind the ice line may be proportional to the mass of the Earth’s oceans. – If bodies containing water did not come to Earth because of the snow line, there would most likely not be oceans on Earth. In this case, only a small amount of water can come to the Earth’s surface from the bowels (for example, during volcanic eruptions).
Without the bombardment of the Earth with water-containing substances, life as we know it would never have arisen.
Former environmentalists refutedthat global warming is rapidly changing the channels of Arctic rivers.