Quote Originally Posted by keehah View Post
NASA fully admits a large and dangerous Planet X could exist, certainly large Planet X's are expected to exist. They have a satellite that could find such a planet recently sent to orbit (WISE). They scanned our solar system then shut the satellite down, and the data they collected has yet to be analyzed they say.
We have covered this in year past in older threads, and here is a very recent NASA update (relevant part starts at 25:30 and ends with the NPR question):