[papichulo2023]

There is even a theory about a mini black hole in our solar system pulling Uranus.

[xpe]

See e.g.

"What If Planet 9 Is a Primordial Black Hole?" by Jakub Scholtz and James Unwin [1]

[1] Phys. Rev. Lett. 125, 051103 – Published 29 July 2020 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.12...