A faint infrared object may be the long-sought planet hiding beyond Neptune.

Last time I remember reading about Planet X / Planet 9, it was hypothesized to exist so far out in Sol’s orbital range that it was extremely difficult to spot via conventional telescope technology of all types. Moreso that it kept showing up in mathematical equations of the Solar system, necessary to balance out… I think it was certain orbital eccentricities of the outer gas giants and Mickey Mouse’s pet dog, IIRC.

I always believed in you, Racer X Planet 9!

https://static.wikia.nocookie.net/speedracer/images/5/5f/1362263-racer_x.jpg