Astronomers of the Smithsonian Institute and Harvard (USA) showed that the Oort cloud contains more interstellar objects than the celestial bodies arising in the solar system. This is reported in an article published in the journal MONTHLY NOTICES OF THE ROYAL ASTRONOMOMICAL SOCIETY: Letters.
The theory of the formation of planetary systems assumes that foreign objects should be less than objects originally in the Oort cloud. However, the very fact of the detection of interstellar comet 2i / borisov shows that the number of interstellar celestial bodies should be much larger at a significant distance from the Sun, while in the immediate vicinity of it prevails the mass of objects formed from the local substance. This hypothesis can be checked using bond shading reviews in the Oort cloud, such as TAOS II (Transneptunian Automated Occultation Survey), specially designed to detect comets in the long-range corners of the solar system.
Astronomers have calculated the estimated share of interstellar objects with large assumptions, but even taking into account this, they must prevail over comets and asteroids that have arisen in the solar system. Scientists expect to launch and subsequent observations of the Faith Nerre Observatory in 2022 will allow you to find more interstellar objects.
Oort cloud is a hypothetical region of the solar system, which is a source of long-period comet. It is assumed that the external cloud borders are at a distance of 50-100 thousand astronomical units from the Sun (the astronomical unit is equal to the average distance from the sun to the Earth), which approximately corresponds to 1-2 lights.
2i / borisov is an object with a diameter of 20 kilometers, discovered on August 30, 2019. The observations showed that the comet moves along a hyperbolic orbit, that is, flew from interstellar space and is not gravitationally associated with the Sun.