The Search for Planet Nine

 Back in August, we published our detailed analysis which gave predictions of where we should expect to find Planet Nine and how big and br...

 Five and a half years after our proposal of the existence of Planet Nine, we have finally accomplished what is perhaps the most important t...

The census of Kuiper belt objects spanning the distant solar system has sure come a long way. Even if we strictly limit our object sample to...

 Konstantin and I have a recurring conversation. One of us says "Wait! I think we're wrong about the evidence for Planet Nine. Here...

I finished the last post by stating the obvious: the Planet Nine hypothesis - as imagined by us - is NOT the first (or even the latest) pro...

The history of Le Verrier’s mathematical discovery of Neptune is my favorite story, period. It’s literally got everything you’d want in a g...

The scientific process is, at its core, iterative. There is no such thing as a truly final/definitive answer - there are only solutions tha...