Since 1992 and the declassification of Pluto for a dwarf planet, our solar system has only eight planets. However, astronomers are still looking for a ninth planet, the so-called planet X, analyzing the trajectories of all the objects beyond Neptune’s orbit. At this distance, a large population of small, rocky objects is having an anomalous collective structure meaning they are possibly interacting with a massive object. Many of these rocks appear to occupy a region close to the plane containing the eighth known planets, leading to this region being called the Kuiper Belt. It is difficult make observation in this region far remote from any light source and astronomers have yet discovered only a small fraction of the objects orbiting beyond Neptune.

In 2016, Caltech researchers found new evidence about “Planet X”. This hypothetical Neptune-sized planet would be orbiting our sun in a highly elongated orbit far beyond Pluto. This object which would be “Planet Nine,” could have a mass about 10 times that of Earth and orbit about 20 times farther from the sun on average than Neptune. It may take between 10,000 and 20,000 Earth years to make one full orbit around the sun.

Read more in the article by Dr. Olivier Alirol, Physicist, Resonance Science Foundation Research Scientist
Credi: Nassim haramein