CALIFORNIA INSTITUTE OF TECHNOLOGY
“It follows a bizarre, highly elongated orbit in the distant solar system. In fact, it would take this new planet between 10,000 and 20,000 years to make just one full orbit around the Sun.”
“Like a parent maintaining the arc of a child on a swing with periodic pushes, Planet Nine nudges the orbits of distant Kuiper Belt objects such that their configuration with relation to the planet is preserved.”
OK, OK, I am now willing to admit: I DO believe that the solar system has nine planets. — Mike Brown (@plutokiller) January 20, 2016
OK, OK, I am now willing to admit: I DO believe that the solar system has nine planets.