> It does not matter whether Planet Nine is a super-Earth or a black hole – its discovery will change our view of the solar system. Regardless of the size of a black hole in our solar system, even a primordial one, it would be an immense breakthrough for scientists to study such an object closely.

We don't know of any black holes in our solar system. This would be quite the discovery I think...

south_korea_ln

Hypothetical [Primordial black holes](https://en.wikipedia.org/wiki/Primordial_black_hole), if they exist, would be much smaller than regular black holes and harder to detect due to their smaller mass.

how did we not pickup on a black hole in our solar system?

profullstack

Astronomers have been trying to find a new planet beyond the orbit of Neptune for several decades, but all to no avail. Its nickname is Planet Nine; supposing this planet exists, it could help explain the trajectories of some far-off objects in space.