There might be a ninth planet in the solar system after all — and it is notPluto. Two astronomers reported on Wednesday that they had compelling signs of something bigger and farther away — something that would definitely satisfy the current definition of a planet, where Pluto falls short. “We are pretty sure there’s one out there,” said Michael E. Brown, a professor of planetary astronomy at the California Institute of Technology. What Dr. Brown and a fellow Caltech professor, Konstantin Batygin, have not done is actually find that planet, so it would be premature to revisemnemonics of the planets just yet. Read more http://www.nytimes.com/2016/01/21/science/space/ninth-planet-solar-system-beyond-pluto.html?_r=0