The planet PLUTO is the 9th planet. As per our observations, there exist further TWO giant planets beyond Pluto in the Solar System. Of course, it is not possible to detect them by present Optical or Radio Telescope owing to great distances and planetary constitution. However, existence can be proved on THREE factors. These are as below:
1. BODE-TITUS RULE OF PLANETARY DISTANCE PROGRESSION FROM THE SUN.
2. THE HIGHEST ECCENTRICITY OF PLUTO’S ORBIT AROUND THE SUN.
3. THE HIGH EXTREMITY OF APHELIA OF ORBIT OF THE GROUP OF COMETS-16.