Astronomers have long suspected that there is a mysterious planet on the outskirts of the Solar System that has yet to be discovered. The authors of the new hypothesis are sure that this is not a planet, but a primary black hole that has survived since the Big Bang.
«Official science has not yet confirmed the existence of primary black holes in reality, but such objects can be extremely common in the universe. Some theoretical models indicate that primary black holes account for up to 80 percent of the mass of the universe. If this is the case, then the primary black holes may be the very dark matter that cosmologists are searching for,» the researchers say.