Planet 9 is elusive. Is it real or an illusion?

For scientists, this is not the end of their research. It can be said that the more there is no planet, the more stubborn scientists will look for it. It is also worth noting that in the past few years, many interesting theories have appeared about this object. In 2018, scientists from Carnegie University suggested that an object that distorts the orbits of small solar system bodies may not be a planet, but small black hole 10 times the mass of the Earth. Such a microscopic black hole would have enough mass to disturb its orbits, and at the same time it would be completely undetectable from Earth. In such a situation, in order to confirm the existence of this black hole, it would be necessary to send out a swarm of miniature space probes and carefully track their flight path. By flying over the black hole, these trajectories will be distorted and could confirm the presence of a massive object. However, we will have to wait for this. So far, scientists are focusing on the careful search of the sky and the search for a planet. Perhaps at some point it will become clear that we are already observing the limits of the universe, and have not noticed the presence of the gigantic giant Earth in the cosmic backyard.