The Micah Hanks Program
TGR 11.21.16. The Cycles of Earth Cataclysms
This week on The Gralien Report, we examine the search for hypothetical moons and hidden planets, and their relationship with the cycle of cataclysms in Earth's history.
This post, TGR 11.21.16. The Cycles of Earth Cataclysms, first appeared at The Gralien Report.