Astronomers observing the mysterious Kuiper Belt deep in space believe they may have detected signs of heretofore undiscovered large planet in our solar system.
In a newly-published paper, the researchers say that they've spotted strange perturbations in the orbits of some space rocks lingering in the mass of icy debris and other materials which make up the Kuiper Belt.
By working through calculations involving the tilt of these objects and other astronomical factors, they concluded that "something as massive as Mars would be needed to cause the warp that we measured."
More on this remarkable story at the Coast to Coast AM website.