There might be a 9th, or 10th, planet orbiting our system. I still believe Pluto is considered a planet. F the haters haha!
But really, this is very cool. The math suggests there might be another planet in our solar system. We know so much about other galaxies, but yet, we know almost nothing about our home.
http://www.extremetech.com/extreme/2...r-beyond-pluto