Lost planet that collided with earth

Just saw the other day more evidence of 'Planet 9' was presented. Maybe in roughly 20,000 years it'll make it's pass around the sun and be proven...or not. The collision theory has been around for a long time. The odds of material blasted out after the Big Bang and colliding to form the galaxies and planets makes the most scientific sense. Now a higher power creating everything and everyone, those science guys can't begin to wrap their heads around that lol.