There have been many dwarf planets found in the outer reaches of our solar systems, but nothing like what they believe these planets might be.

“This excess of objects with unexpected orbital parameters makes us believe that some invisible forces are altering the distribution of the orbital elements of the ETNOs, and we consider that the most probable explanation is that other unknown planets exist beyond Neptune and Pluto,” said the lead author of the study, Carlos de la Fuente Marcos.

“The exact number is uncertain, given that the data that we have is limited, but our calculations suggest that there are at least two planets, and probably more, within the confines of our solar system.”

That’s a heck of a discovery to have made! How many planets do you think might exist?
http://higherperspective.com/2015/01/breaking.html#ZrUfgAhIiIcOioFV.99