[cripplecreek]

They have been making a case for Tyche since 1999, suggesting that the giant planet's presence in a far-flung region of solar system called the Oort cloud would explain the unusual orbital paths of some comets that originate there.

Kind of foolish to make a declaration that something attatched to our solar system would have to be the cause of odd comet orbits. We just can't be sure either way. At that distance the ort cloud could easily be interacting with dark objects moving through space unatrtatched to anything. For that matter it could be interacting with the ort cloud of Alpha Centauri.

I's WAY out there.

[RetiredTexasVet]

I have no doubt that tax payer dollars were expended. But the charts are really nice ... probably at a few hundred million dollars each!