[Tee tiong huat]

We may just be on the Brink of finding the real Planet Nine in our own solar system. If there’s a hidden world in the solar system, we all need a new telescope should find it.

Planet Nine.” If when it finally shows up, it'll get the honor of a real name, so far, evidence for this hypothetical planet is all indirect, as thousands of known planets orbiting other stars have found by observing their gravitational effects, rather than by actually seeing them, Planet Nine has been identified thks to way it apparently tugging on a variety of small bodies in outer solar system, pulling their orbits into lockstep patterns,
Planet nine orbits Sun @an average distance around 550 astronomical units (AU), or 550 times as far as Earth is from Sun. 

Some astronomers think that the body of evidence is already overwhelming. Others are not convinced. But nearly decade-long debate is reaching a critical point: New observatory is coming online that should give astronomers the chance to find it. If Planet Nine does exist, the chance to see it may be just around the corner. Astronomers think it has between five and 10 times Earth’s mass.