At the risk of being thought a nutter, which I am sure some people already do, I would like to speculate a little hypothesis.
The search is on for a ninth planet almost certainly known to be orbiting our Sun: Evidence suggests huge ninth planet exists past Pluto at solar system’s edge
This artistic rendering shows the distant view from Planet Nine back towards the sun. The planet is thought to be gaseous, similar to Uranus and Neptune. Hypothetical lightning lights up the night side Caltech/R. Hurt (IPAC)
My thoughts on this are that the presence of this planet has been known (though as yet unseen) for some time. The powers that be (TPTB) do not want this planet to be known or referred to as Planet-10. To this end, they have organised for Pluto, long known as a planet, the ninth planet actually, to recently be downgraded to the status of merely a planetessimal (a not fully formed planet, though it is as round as can be). By this subterfuge they can now refer to the new planet as Planet-9.
Did you, like me, think at the time, what was the point of downgrading Pluto? It achieved nothing, and rendered so many books and established images of the solar system out of date. Curious indeed.
Why would they not wish to call the new space object Planet-10? Good question.
A tenth planet has been talked about since very ancient times. Even before the modern discovery of the now known outer planets. The historical Planet-10 or Planet-X as it is alternatively spoken of, was declared in ancient cuneiform tablets from the Sumerian era as the home of the Annunaki, or ‘Gods who came from the sky’. It wouldn’t do for the modern ‘one god’ of the major monotheistic religions to be displaced at this stage in our developmental progress by a bunch of visitors from another planet, would it? Even if the stories in the books of the ‘one god’ are largely poor copies of the stories already written down in that earlier human civilisation.
It wouldn’t do at all, would it? Question everything.
I will say no more, other than to suggest that this recent search for a new planet should at least stimulate a revisit to the works of Zecharia Sitchin known as the Earth Chronicles. Here is a reasonably good overview of his writings: The Earth Chronicles – Zecharia Sitchin