“…so far the international astronomical community has fielded numerous suggestions from across the globe. The most common suggestions involve the theory that the mysterious planet is actually inside Uranus, or also popularly mooted is that the missing mass can be attributed to “yo momma”, although who or what this means is up for debate. “

My best guesses are this is poorly translated or AI, but neither of those explain this

And that’s because the solar system’t make sense without it.

TL;DR:
We don’t know. Maybe.

Also:

In the last 100 years, astronomers have discovered much smaller objects, called frog planets, and one of them is Pluto.

The discovery of some of these dwarf planets

Frog planets. Quack.