Question

what are the hidden planets in solar system?​

Answer 1

Answer:

Previous work had suggested that a number of far-out objects in the solar system clump in the sky as if shepherded by an unseen giant planet. That planet would have to have at least 10 times the mass of Earth. Astronomers dubbed the invisible world Planet Nine or Planet X.

Answer 2

Answer:

$\huge\mathcal{\colorbox{deeppink}{Planet Nine or Planet X}}$

Explanation:

hope this helps you

drop multiple thanks please

@Dasaritra492