Although it might be too difficult to spot because of the distance, astronomers are convinced that there is an extra planet inside our solar system. The existence of the ninth planet has been theorized for decades; well the tenth planet, since Pluto has been downgraded just recently.
Named Planet Nine, the mysterious object is 10 times larger than our Earth and it is currently 20 times farther away from the sun than Neptune, the most distanced planet in our solar system. The existence of Planet Nine is not official yet, although there are plenty of esteemed scientists and astronomers that have strong suspicions about a large planet just lurking on the outskirts of our solar system.
The finding of such a planet would explain the off balance that the solar system is suffering from. For most star systems, the inhabiting planets tend to rotate in line with their host star. Our home doesn’t respect that rule, as the planets in the solar system are off the sun’s axis by 6 degrees.
Despite the fact that a lot of men of science strongly believe in the existence of the ninth planet, our existing telescopes simply lack the power to really see it. An associated professor down at the Kavli Institute for the Physics and Mathematics of the Universe at the University of Tokyo, Dr. Surhud More, has reported for the Washington Post that every picture of space could contain the possibility of the ninth planet.
Even NASA believes that it is harder to picture the solar system without Planet Nine than with it. Planet Nine would help us identify the cause for a lot of odd features happening in our solar system as well, one of them being why does the Kuiper Belt orbits in the opposite direction to the planets which are within its limits.