Question

what is meant by planet 9​

Answer 1

Answer:

Hypothetical Planet.

Explanation:

Planet 9 is a Hypothetical Planet in the outer region of the solar system.

Answer 2

Explanation:

Planet Nine is a hypothetical planet in the outer region of the Solar System. Its gravitational effects could explain the unusual clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth.