I think that Douglas Adams put it best when he said:
Space is big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist, but that’s just peanuts to space.
And that is why it comes as no surprise that another planet may well be hiding out their somewhere.
Planet Nine’s days of lurking unseen in the dark depths of the outer solar system may be numbered.
The hypothetical giant planet, which is thought to be about 10 times more massive than Earth, will be discovered within 16 months or so, astronomer Mike Brown predicted.