The recent (understandable!) interest in the object Ultima Thule (2014-MU69) reminds us of a puzzle about the outer Solar system. Specifically: just how heavy are all the Trans-Neptunian Objects, if you combine them? That question has direct relevance to the most comprehensive creation theory, the Hydroplate Theory of Walter T. Brown. Someone, about a year … Continue reading Trans-Neptunian objects: just how heavy?