A ninth planet?

Some of this data will sound eerily reminiscent 
of Zecharia Sitchin's work - particularly the 
30 degree downward tilt of the undiscovered 
planet's gravitational influence.  It's highly 
elliptical.  It's at least ten times the Earth's mass, 
they think...

Hmm denser than Earth? Therefore more 
material than Earth - low vibrational beings? 
would inhabit such a planet rather than spiritual
beings .... hmmm... the 8th Sphere of Occultism?